
When you build websites or apps, sometimes they need to get information from other websites. But for safety, browsers have rules that can block this. These rules are called CORS.
If there's a CORS problem, it usually means the website you're asking for information from isn't letting your app talk to it.
This guide will explain what CORS is, why these problems happen, and how you can fix them easily, whether you're using tools like React, Vue, or Angular.
Introduction
When building modern web applications, especially those that interact with APIs, Cross-Origin Resource Sharing (CORS) errors are some of the most common — and often frustrating — hurdles developers face. This complete guide will help you understand what CORS is, why it causes issues, and how to fix CORS errors effectively in your projects.
What is CORS?
Cross-Origin Resource Sharing (CORS) is a security mechanism enforced by web browsers. It controls how resources hosted on one domain (origin) can be requested by a webpage from another domain.
For example, if your frontend app is running on https://myfrontend.com and you try to fetch data from https://api.mybackend.com, the browser checks if the backend server permits this cross-origin request. If it doesn’t explicitly allow it, the browser will block the request — leading to a CORS error.
In simple words:
CORS is like a security gatekeeper that says, “Hey, this frontend is trying to get something from a different backend — is that allowed?”
Why Do CORS Issues Happen?
CORS issues typically occur when:
Your server doesn't include the correct CORS headers.
Your frontend and backend are on different domains, ports, or protocols.
You are making certain types of requests (like
POST,PUT,DELETE, or requests with custom headers) that trigger a preflight request, and the server doesn’t respond properly.Some APIs by default block cross-origin requests for security reasons.
Common CORS Error Message
You might see errors like:
Translation:
Your frontend is trying to talk to a server, but the server didn’t say, “It’s okay for you to talk to me.”
How to Fix CORS Issues
Here’s a step-by-step guide depending on your environment:
1. Fix CORS on the Backend (Recommended)
The most proper way to fix CORS issues is to configure your server to allow requests from your frontend origin.
Node.js (Express.js) Example:
Other backend technologies:
Django: Use
django-cors-headersFlask: Use
flask-corsSpring Boot: Use
@CrossOriginannotationASP.NET: Configure CORS in
Startup.cs
✅ Tip: Always configure CORS carefully in production — don’t allow * (all origins) unless absolutely necessary.
2. Use a Proxy Server (Temporary Solution)
During development, you can proxy API requests through your own server to avoid CORS issues.
In React (Create React App), add this to
package.json:
Now, instead of making API requests to the external domain, your app will send them to your local server, which then forwards them.
In Vite (modern frontend tool):
3. Modify Frontend Only (Not Recommended)
There’s no way to completely fix CORS by changing frontend code alone because CORS is enforced by browsers — not your JavaScript. However, you can:
Use JSONP (for old GET-only APIs) — not secure or recommended now.
Use iframe hacks or browser plugins during development (e.g., “Allow CORS: Access-Control-Allow-Origin” Chrome extension) — again, not recommended for production.
4. Enable CORS at API Gateway Level
If you are using API gateways like AWS API Gateway, Cloudflare Workers, NGINX Reverse Proxy, or others, configure CORS there.
For example, in AWS API Gateway, you can enable CORS by:
Opening the API Gateway console.
Selecting your method (GET/POST).
Enabling CORS in the settings.
Understanding Preflight Requests
Some requests — like those using PUT, DELETE, PATCH, or custom headers — trigger a preflight request.
The browser sends an
OPTIONSrequest first to check if it’s okay.If the server doesn’t respond with the proper CORS headers for the
OPTIONSmethod, the real request will be blocked.
Fix: Make sure your server handles OPTIONS requests and returns correct CORS headers!
Important CORS Headers to Know
HeaderPurposeAccess-Control-Allow-OriginWhich domain(s) can access the resourceAccess-Control-Allow-MethodsWhat methods (GET, POST, etc.) are allowedAccess-Control-Allow-HeadersWhat headers can be used in the requestAccess-Control-Allow-CredentialsWhether to allow cookies/auth
Best Practices for Handling CORS
Whitelist only trusted origins — don’t allow
*in production.Log and monitor CORS errors on the client-side for debugging.
Secure sensitive data even when CORS is configured — CORS is not a security mechanism for APIs; it’s a browser feature!
Handle preflight (OPTIONS) requests properly.
Test in production-like environments to avoid surprises.
Conclusion
Handling CORS issues might seem annoying at first, but with a clear understanding of how it works, solving them becomes easy. Always aim to fix CORS problems at the server level rather than relying on workarounds. Setting up proper CORS headers ensures your application stays secure, robust, and user-friendly.
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Figma Design To Code: Step-by-Step Guide 2025
The gap between a finished design and functional code is a known friction point in product development. For non-coders, it’s a barrier. For busy frontend developers, it's a source of repetitive work that consumes valuable time. The process of translating a Figma design to code, while critical, is often manual and prone to error.
This article introduces the concept of Figma design to code automation. We will walk through how Dualite Alpha bridges the design-to-development gap. It offers a way to quickly turn static designs into usable, production-ready frontend code, directly in your browser.
Why “Figma Design to Code” Matters
UI prototyping is the stage where interactive mockups are created. The design handoff is the point where these approved designs are passed to developers for implementation. Dualite fits into this ecosystem by automating the handoff, turning a visual blueprint into a structural codebase.
The benefits are immediate and measurable.
Saves Time: Research shows that development can be significantly faster with automated systems. A study by Sparkbox found that using a design system made a simple form page 47% faster to develop versus coding it from scratch. This frees up developers to focus on complex logic.
Reduces Errors: Manual translation introduces human error. Automated conversion ensures visual and structural consistency between the Figma file and the initial codebase. According to Aufait UX, teams using design systems can reduce errors by as much as 60%.
Smoother Collaboration: Tools that automate code generation act as a common language between designers and developers. They reduce the back-and-forth communication that often plagues projects. Studies on designer-developer collaboration frequently point to communication issues as a primary challenge.

This approach helps both non-coders and frontend developers. It provides a direct path to creating responsive layouts and functional components, accelerating the entire development lifecycle.
Getting Started with Dualite Alpha
Dualite Alpha is a platform that handles the entire workflow from design to deployment. It operates within your browser, requiring no server storage for your projects. This enhances security and privacy.
Its core strengths are:
Direct Figma Integration: Dualite works with Figma without needing an extra plugin. You can connect your designs directly.
Automated Code Generation: The platform intelligently interprets Figma designs to produce clean, structured code.
Frontend Framework Support: It generates code for React, Tailwind CSS, and plain HTML/CSS, fitting into modern tech stacks.

Dualite serves as a powerful accelerator for any team looking to improve its Figma design to code workflow.
Figma Design to Code: Step-by-Step Tutorial
The following tutorial breaks down the process of converting your designs into code. For a visual guide, the video below offers a complete masterclass, showing how to build a functional web application from a Figma file using Dualite Alpha. The demonstration covers building a login page, handling page redirection, making components functional, and ensuring responsiveness.


Step 1: Open Dualite and Connect Your Figma Account
First, go to dualite.dev and select "Try Dualite Now" to open the Dualite (Alpha) interface. Within the start screen, click on the Figma icon and then "Connect Figma." You will be prompted to authorize the connection via an oAuth window. It is crucial to select the Figma account that owns the design file you intend to use.



Step 2: Copy the Link to Your Figma Selection
In Figma, open your design file and select the specific Frame, Component, or Instance that you want to convert. Right-click on your selection, go to "Copy/Paste as," and choose "Copy link to selection."
Step 3: Import Your Figma Design into Dualite
Return to Dualite and paste the copied URL into the "Import from Figma" field. Click "Import." Dualite will process the link, and a preview of your design will appear along with a green checkmark to indicate that the design has been recognized.


Step 4: Confirm and Continue
Review the preview to ensure it accurately represents your selection. If everything looks correct, click "Continue with this design" to proceed.
Step 5: Select the Target Stack and Generate the Initial Build
In the "Framework" dropdown menu, choose your desired stack, such as React. Then, in the chat box, provide a simple instruction like, "Build this website based on the Figma file." Dualite will then parse the imported design and generate the working code along with a live preview.

Step 6: Iterate and Refine with Chat Commands
You can make further changes to your design using short, conversational follow-ups in the chat. For instance, you can request to make the hero section responsive for mobile, turn a button into a link, or extract the navigation bar into a reusable component. This iterative chat feature is designed for making stepwise changes after the initial build.
Step 7: Inspect, Edit, and Export Your Code
You can switch between the "Preview" and "Code" views using the toggle at the top of the screen. This allows you to open files, tweak styles or logic, and save your changes directly within Dualite’s editor. When you are finished, you can download the code as a ZIP file to use it locally. Alternatively, you can push the code to GitHub with the built-in two-way sync, which allows you to import an existing repository, push changes, or create a new repository from your project.
Step 8: Deploy Your Website
Finally, to publish your site, click "Deploy" in the top-right corner and connect your Netlify account.
This is highly useful for teams that need to prototype quickly. It also strengthens collaboration between design and development by providing a shared, code-based foundation. Research from zeroheight shows that design-to-development handoff efficiency can increase by 50% with such systems.
Conclusion
Dualite simplifies the Figma design to code process. It provides a practical, efficient solution for turning visual concepts into tangible frontend code.
The platform benefits both designers and developers. It creates a bridge between roles, reducing friction and speeding up the development cycle. By adopting a hybrid approach—using generated code as a foundation and refining it—teams can gain a significant advantage in their workflow.
The future of frontend development is about working smarter, and tools like Dualite are central to that objective. The efficiency of a Figma design to code workflow is a clear step forward. A focus on better tools will continue to improve the Figma design to code process. This makes the Figma design to code strategy a valuable one. For any team, improving the Figma design to code pipeline is a worthy goal.
FAQ Section
1) Can I convert Figma design to code?
Yes. Tools like Dualite let you convert Figma designs into React, HTML/CSS, or Tailwind CSS code with a few clicks. Figma alone provides only basic CSS snippets, not full layouts or structure.
2) Can ChatGPT convert Figma design to code?
Not directly. ChatGPT cannot parse Figma files. You can describe a design and ask for code suggestions, but it cannot generate accurate front-end layouts from actual Figma prototypes.
3) Does Figma provide code for design?
Figma’s Dev Mode offers CSS and SVG snippets, but not full production-ready code. Most developers still hand-write the structure, style, and logic based on those hints.
4) What tool converts Figma to code?
Dualite is one such tool that turns Figma designs into clean code quickly. Other tools exist, but users report mixed results—often fine for prototypes, but not always clean or maintainable.
Figma & No-code
Shivam Agarwal


Secure Code Review Checklist for Developers
Writing secure code is non-negotiable in modern software development. A single vulnerability can lead to data breaches, system downtime, and a loss of user trust. The simplest, most effective fix is to catch these issues before they reach production. This is accomplished through a rigorous code review process, guided by a secure code review checklist.
A secure code review checklist is a structured set of guidelines and verification points used during the code review process. It ensures that developers consistently check for common security vulnerabilities and adhere to best practices. For instance, a checklist item might ask, "Is all user-supplied input validated and sanitized to prevent injection attacks (e.g., SQLi, XSS)?"
This article provides a detailed guide to creating and using such a checklist, helping you build more resilient and trustworthy applications from the ground up. We will cover why a checklist is essential, how to prepare for a review, core items to include, and how to integrate automation to make the process efficient and repeatable.
TL;DR: Secure Code Review Checklist
A secure code review checklist is a structured guide to ensure code is free from common security flaws before reaching production. The core items include:
Input Validation – Validate and sanitize all user input on the server side.
Output Encoding – Use context-aware encoding to prevent XSS.
Authentication & Authorization – Enforce server-side checks, hash & salt passwords, follow least privilege.
Error Handling & Logging – Avoid leaking sensitive info, log security-relevant events without secrets.
Data Encryption – Encrypt data at rest and in transit using strong standards (TLS 1.2+, AES-256).
Session Management – Secure tokens, timeouts, HttpOnly & Secure cookies.
Dependency Management – Use SCA tools, keep libraries updated.
Logging & Monitoring – Track suspicious activity, monitor alerts, protect log files.
Threat Modeling – Continuously validate assumptions and attack vectors.
Secure Coding Practices – Follow OWASP, CERT, and language-specific standards.
Use this checklist during manual reviews, supported by automation (SAST/SCA tools), to catch vulnerabilities early, reduce costs, and standardize secure development practices.
Why Use a Secure Code Review Checklist?
Code quality and vulnerability assessment are two sides of the same coin. A checklist provides a systematic approach to both. It helps standardize the review process across your entire team, ensuring no critical security checks are overlooked. This is why we use a secure code review checklist.
The primary benefit is catching security issues early in the development lifecycle. Fixing a vulnerability during development is significantly less costly and time-consuming than patching it in production. According to a report by the Systems Sciences Institute at IBM, a bug found in production is six times more expensive to fix than one found during design and implementation.
Organizations like the Open Web Application Security Project (OWASP) provide extensive community-vetted resources that codify decades of security wisdom. A checklist helps you put this wisdom into practice. Even if the checklist items seem obvious, the act of using one frames the reviewer's mindset, focusing their attention specifically on security concerns. This focus alone significantly increases the likelihood of detecting vulnerabilities that might otherwise be missed.
Standardization: Ensures every piece of code gets the same security scrutiny.
Efficiency: Guides reviewers to the most critical areas quickly.
Early Detection: Finds and fixes flaws before they become major problems.
Knowledge Sharing: Acts as a teaching tool for junior developers.
Preparing Your Secure Code Review
A successful review starts before you look at a single line of code. Proper preparation ensures your efforts are focused and effective. Without a plan, reviews can become unstructured and miss critical risks.

Threat Modeling First
Before reviewing code, you must understand the application's potential threats. Threat modeling is a process where you identify security risks and potential vulnerabilities.
Ask questions like:
Where does the application handle sensitive data?
What are the entry points for user input?
How do different components authenticate with each other?
What external systems does the application trust?
This analysis helps you pinpoint high-risk areas of the codebase architecture that demand the most attention.
Define Objectives
Clarify the goals of the review. Are you hunting for specific bugs, verifying compliance with a security standard, or improving overall code quality? Defining your objectives helps focus the review and measure its success.
Set Scope
You do not have to review the entire codebase at once. Start with the most critical and high-risk code segments identified during threat modeling.
Focus initial efforts on:
Authentication and Authorization Logic: Code that handles user logins and permissions.
Session Management: Functions that create and manage user sessions.
Data Encryption Routines: Any code that encrypts or decrypts sensitive information.
Input Handling: Components that process data from users or external systems.
Gather the Right Tools and People
Assemble a review team with a good mix of skills. Include the developer who wrote the code, a security-minded developer, and, if possible, a dedicated security professional. This combination of perspectives provides a more thorough assessment.
Equip the team with the proper tools, including access to the project's documentation and specialized software. For instance, static analysis tools can automatically scan for vulnerabilities. For threat modeling, you might use OWASP Threat Dragon, and for automation, a platform like GitHub Actions can integrate security checks directly into the workflow.
Core Secure Code Review Checklist Items
This section contains the fundamental items that should be part of any review. Each one targets a common area where security vulnerabilities appear.
1) Input Validation
Attackers exploit applications by sending malicious or unexpected input. Proper input validation is your first line of defense.
Validate on the Server Side: Never trust client-side validation alone. Attackers can easily bypass it. Always re-validate all inputs on the server.
Classify Data: Separate data into trusted (from internal systems) and untrusted (from users or external APIs) sources. Scrutinize all untrusted data.
Centralize Routines: Create and use a single, well-tested library for all input validation. This avoids duplicated effort and inconsistent logic.
Canonicalize Inputs: Convert all input into a standard, simplified form before processing. For example, enforce UTF-8 encoding to prevent encoding-based attacks.
2) Output Encoding
Output encoding prevents attackers from injecting malicious scripts into the content sent to a user's browser. This is the primary defense against Cross-Site Scripting (XSS).
Encode on the Server: Always perform output encoding on the server, just before sending it to the client.
Use Context-Aware Encoding: The method of encoding depends on where the data will be placed. Use specific routines for HTML bodies, HTML attributes, JavaScript, and CSS.
Utilize Safe Libraries: Employ well-tested libraries provided by your framework to handle encoding. Avoid writing your own encoding functions.
3) Authentication & Authorization
Authentication confirms a user's identity, while authorization determines what they are allowed to do. Flaws in these areas can give attackers complete control.
Enforce on the Server: All authentication and authorization checks must occur on the server.
Use Tested Services: Whenever possible, integrate with established identity providers or use your framework's built-in authentication mechanisms.
Centralize Logic: Place all authorization checks in a single, reusable location to ensure consistency.
Hash and Salt Passwords: Never store passwords in plain text. Use a strong, adaptive hashing algorithm like Argon2 or bcrypt with a unique salt for each user.
Use Vague Error Messages: On login pages, use generic messages like "Invalid username or password." Specific messages ("User not found") help attackers identify valid accounts.
Secure External Credentials: Protect API keys, database credentials, and other secrets. Store them outside of your codebase using a secrets management tool.
4) Error Handling & Logging
Proper error handling prevents your application from leaking sensitive information when something goes wrong.
Avoid Sensitive Data in Errors: Error messages shown to users should never contain stack traces, database queries, or other internal system details.
Log Sufficient Context: Your internal logs should contain enough information for debugging, such as a timestamp, the affected user ID (if applicable), and the error details.
Do Not Log Secrets: Ensure that passwords, API keys, session tokens, and other sensitive data are never written to logs.
5) Data Encryption
Data must be protected both when it is stored (at rest) and when it is being transmitted (in transit).
Encrypt Data in Transit: Use Transport Layer Security (TLS) 1.2 or higher for all communication between the client and server.
Encrypt Data at Rest: Protect sensitive data stored in databases, files, or backups.
Use Proven Standards: Implement strong, industry-accepted encryption algorithms like AES-256. For databases, use features like Transparent Data Encryption (TDE) or column-level encryption for the most sensitive fields.
6) Session Management & Access Controls
Once a user is authenticated, their session must be managed securely. Access controls ensure users can only perform actions they are authorized for.
Secure Session Tokens: Generate long, random, and unpredictable session identifiers. Do not include any sensitive information within the token itself.
Expire Sessions Properly: Sessions should time out after a reasonable period of inactivity. Provide users with a clear log-out function that invalidates the session on the server.
Guard Cookies: Set the
SecureandHttpOnlyflags on session cookies. This prevents them from being sent over unencrypted connections or accessed by client-side scripts.Enforce Least Privilege: Users and system components should only have the minimum permissions necessary to perform their functions.
7) Dependency Management
Modern applications are built on a foundation of third-party libraries and frameworks. A vulnerability in one of these dependencies is a vulnerability in your application.
Use Software Composition Analysis (SCA) Tools: These tools scan your project to identify third-party components with known vulnerabilities.
Keep Dependencies Updated: Regularly update your dependencies to their latest stable versions. Studies from organizations like Snyk regularly show that a majority of open-source vulnerabilities have fixes available. A 2025 Snyk report showed projects using automated dependency checkers fix vulnerabilities 40% faster.
8) Logging & Monitoring
Secure logging and monitoring help you detect and respond to attacks in real-time.
Track Suspicious Activity: Log security-sensitive events such as failed login attempts, access-denied errors, and changes to permissions.
Monitor Logs: Use automated tools to monitor logs for patterns that could indicate an attack. Set up alerts for high-priority events.
Protect Your Logs: Ensure that log files are protected from unauthorized access or modification.
9) Threat Modeling
During the review, continuously refer back to your threat model. This helps maintain focus on the most likely attack vectors.
Review Data Flows: Trace how data moves through the application.
Validate Trust Boundaries: Pay close attention to points where the application interacts with external systems or receives user input.
Question Assumptions: Could an attacker manipulate this data flow? Could they inject code or bypass a security control?
10) Code Readability & Secure Coding Standards
Clean, readable code is easier to secure. Ambiguous or overly complex logic can hide subtle security flaws.
Write Clear Code: Use meaningful variable names, add comments where necessary, and keep functions short and focused.
Use Coding Standards: Adhere to established secure coding standards for your language. Some great resources are the OWASP Secure Coding Practices, the SEI CERT Coding Standards, and language-specific guides.
11) Secure Data Storage
How and where you store sensitive data is critical. This goes beyond just encrypting the database.
Protect Backups: Ensure that database backups are encrypted and stored in a secure location with restricted access.
Sanitize Data: When using production data in testing or development environments, make sure to sanitize it to remove any real user information.
Limit Data Retention: Only store sensitive data for as long as it is absolutely necessary. Implement and follow a clear data retention policy.
Automated Tools to Boost Your Checklist
Manual reviews are essential for understanding context and business logic, but they can be slow and prone to human error. For smaller teams, free and open-source tools like SonarQube, Snyk, and Semgrep perfectly complement a manual secure code review checklist by catching common issues quickly and consistently.
Integrate SAST and SCA into CI/CD
Integrate Static Application Security Testing (SAST) and Software Composition Analysis (SCA) tools directly into your Continuous Integration/Continuous Deployment (CI/CD) pipeline. This automates the initial security scan on every code commit.
SAST Tools: These tools analyze your source code without executing it. They are excellent at finding vulnerabilities like SQL injection, buffer overflows, and insecure configurations.
SCA Tools: These tools identify all the open-source libraries in your codebase and check them against a database of known vulnerabilities.
Configure Security-Focused Rules
Configure your automated tools to enforce specific security rules tied to standards like OWASP Top 10 or the SEI CERT standards. This ensures that the automated checks are directly connected to your security requirements.
Popular Static Analysis Tools
Several tools can help automate parts of your review:
PVS-Studio: A static analyzer for C, C++, C#, and Java code.
Semgrep: A fast, open-source static analysis tool that supports many languages and allows for custom rules.
SonarQube: An open-platform to manage code quality, which includes security analysis features.

Running The Review
With your preparation complete and checklist in hand, it is time to conduct the review. A structured approach makes the process more efficient and less draining for the participants.
Timebox Your Sessions
Limit each review session to about 60-90 minutes. Longer sessions can lead to fatigue and reduced focus, making it more likely that reviewers will miss important issues. It is better to have multiple short, focused sessions than one long, exhaustive one.
Apply the Checklist Systematically
Work through your checklist steadily. Start with the high-risk areas you identified during threat modeling. Use a combination of automated tools and manual inspection.
Run Automated Scans First: Let SAST and SCA tools perform an initial pass to catch low-hanging fruit.
Manually Inspect High-Risk Code: Use your expertise and the checklist to examine authentication, authorization, and data handling logic.
Validate Business Logic: Check for flaws in the application's logic that an automated tool would miss.
Track Metrics for Improvement
To make your process repeatable and measurable, track key metrics.
Metric | Description | Purpose | Tracking Tools |
Inspection Rate | Lines of code reviewed per hour. | Helps in planning future reviews. | Code review systems (Crucible, Gerrit) or custom dashboards (Grafana, Tableau) pulling data from version control. |
Defect Density | Number of defects found per 1,000 lines of code. | Measures code quality over time. | Static analysis tools (SonarQube) and issue trackers (Jira, GitHub Issues). |
Time to Remediate | Time taken to fix a reported issue. | Measures the efficiency of your response process. | Issue trackers like Jira, GitHub Issues, Asana, or service desk software like Zendesk. |
Keeping Your Process Up to Date
Security is not a one-time activity. The threat environment is constantly changing, and your review process must adapt. An effective secure code review checklist is a living document.
Update for New Threats
Regularly review and update your checklist to include checks for new types of vulnerabilities. Stay informed by following security publications from organizations like NIST and OWASP. When a new major vulnerability is disclosed (like Log4Shell), update your checklist to include specific checks for it.
Build a Security-First Mindset
The ultimate goal is to create a team where everyone thinks about security. Use the code review process as an educational opportunity. When you find a vulnerability, explain the risk and the correct way to fix it. This continuous training builds a stronger, more security-aware engineering team.
Sample “Starter” Checklist
Here is a starter secure code review checklist based on the principles discussed. You can use this as a foundation and customize it for your specific tech stack and application. This is structured in a format you can use in a GitHub pull request template.
For a more detailed baseline, the OWASP Code Review Guide and the associated Quick Reference Guide are excellent resources.
Input Validation
[Critical]Is the application protected against injection attacks (SQLi, XSS, Command Injection)?[Critical]Is all untrusted input validated on the server side?[High]Is input checked for length, type, and format?[Medium]Is a centralized input validation routine used?
Authentication & Authorization
[Critical]Are all sensitive endpoints protected with server-side authentication checks?[Critical]Are passwords hashed using a strong, salted algorithm (e.g., Argon2, bcrypt)?[Critical]Are authorization checks performed based on the user's role and permissions, not on incoming parameters?[High]Are account lockout mechanisms in place to prevent brute-force attacks?[High]Does the principle of least privilege apply to all user roles?
Session Management
[Critical]Are session tokens generated with a cryptographically secure random number generator?[High]Are session cookies configured with theHttpOnlyandSecureflags?[High]Is there a secure log-out function that invalidates the session on the server?[Medium]Do sessions time out after a reasonable period of inactivity?
Data Handling & Encryption
[Critical]Is all sensitive data encrypted in transit using TLS 1.2+?[High]Is sensitive data encrypted at rest in the database and in backups?[High]Are industry-standard encryption algorithms (e.g., AES-256) used?[Medium]Are sensitive data or system details avoided in error messages?
Dependency Management
[High]Has an SCA tool been run to check for vulnerable third-party libraries?[High]Are all dependencies up to their latest secure versions?
Logging & Monitoring
[Critical]Are secrets (passwords, API keys) excluded from all logs?[Medium]Are security-relevant events (e.g., failed logins, access denials) logged?
Conclusion
Building secure software requires a deliberate and systematic effort. This is why your team needs a secure code review checklist. It provides structure, consistency, and a security-first focus to your development process. It transforms code review from a simple bug hunt into a powerful defense against attacks.
For the best results, combine the discipline of a powerful secure code review checklist with automated tools and the contextual understanding that only human reviewers can provide. This layered approach ensures you catch a wide range of issues, from simple mistakes to complex logic flaws. Begin integrating these principles and build your own secure code review checklist today. Your future self will thank you for the secure and resilient applications you create.
FAQs
1) What are the 7 steps to review code?
A standard secure code review process involves seven steps:
Define review goals and scope.
Gather the code and related artifacts.
Run automated SAST/SCA tools for an initial scan.
Perform a manual review using a checklist, focusing on high-risk areas.
Document all findings clearly with actionable steps.
Prioritize the documented issues based on risk.
Remediate the issues and verify the fixes.
2) How to perform a secure code review?
To perform a secure code review, you should first define your objectives and scope, focusing on high-risk application areas. Then, use a checklist to guide your manual inspection, and supplement your review with SAST and SCA tools. Document your findings and follow up to ensure fixes are correctly implemented.
3) What is a code review checklist?
A secure code review checklist is a structured list of items that guides a reviewer. It ensures consistent and thorough coverage of critical security areas like input validation, authentication, and encryption, helping to prevent common vulnerabilities and avoid gaps in the review process.
4) What are SAST tools during code review?
SAST stands for Static Application Security Testing. These tools automatically scan an application's source code for known vulnerability patterns without running the code. Tools like PVS-Studio, Semgrep, or SonarQube can find potential issues such as SQL injection, buffer overflows, and insecure coding patterns early in development.
5) How long should a secure code review take per 1,000 LOC?
There isn't a strict time rule, as the duration depends on several factors. However, a general industry guideline for a manual review is between 1 to 4 hours per 1,000 lines of code (LOC).
Factors that influence this timing include:
Code Complexity: Complex business logic or convoluted code will take longer to analyze than simple, straightforward code.
Reviewer's Experience: A seasoned security professional will often be faster and more effective than someone new to code review.
Programming Language: Some languages and frameworks have more inherent security risks and require more scrutiny.
Scope and Depth: A quick check for the OWASP Top 10 vulnerabilities is much faster than a deep, architectural security review.
LLM & Gen AI
Shivam Agarwal


Code Dependencies: What They Are and Why They Matter
Dependencies in code are like ingredients for a recipe. When baking a cake, you don't grow the wheat and grind your own flour; you purchase it ready-made. Similarly, developers use pre-written code packages, known as libraries or modules, to construct complex applications without writing every single line from scratch.
These pre-made components are dependencies—external or internal pieces of code your project needs to function correctly. Managing them properly impacts your application's quality, security, and performance. When you build software, you integrate these parts created by others, which introduces a reliance on that external code. Your project's success is tied to the quality and maintenance of these components.
This article provides a detailed look into software dependencies. We will cover what they are, the different types you will encounter, and why managing them is a critical skill for any engineering team. We will also present strategies and tools to handle them effectively.
What “Dependency” Really Means in Programming
In programming, a dependency is a piece of code that your project relies on to function. These are often external libraries or modules that provide specific functionality. Think of them as pre-built components you use to add features to your application.

In software development, it's useful to distinguish between the general concept of dependence and the concrete term dependency.
Dependence is the state of relying on an external component for your code to function. It describes the "need" itself.
A dependency is the actual component you are relying on, such as a specific library, package, or framework.
This dependence means a change in a dependency can affect your code. For instance, if a library you use is updated or contains a bug, it directly impacts your project because of this reliance. Recognizing this is a foundational principle in software construction.
Libraries, External Modules, and Internal Code
It's useful to differentiate between a few common terms:
Software Libraries: These are collections of pre-written code that developers can use. For example, a library like NumPy in Python might offer functions for complex mathematical calculations. You import the library and call its functions.
External Modules: This is a similar concept. An external module is a self-contained unit of code that exists outside your primary project codebase. Package managers install these modules for you to use. A well-known example is React, which is used for building user interfaces.
Internal Modular Code: These are dependencies within your own project. You might break your application into smaller, reusable modules. For instance, a
userAuth.jsmodule could be used by both the authentication and profile sections of your application, creating an internal dependency.
A Community Perspective
Developers often use analogies to explain this concept. One clear explanation comes from a Reddit user, who states: “Software dependencies are external things your program relies on to work. Most commonly this means other libraries.” This simple definition captures the core idea perfectly.
Another helpful analogy from the same discussion simplifies it further: “...you rely on someone else to do the actual work and you just depend on it.” This highlights the nature of using a dependency. You integrate its functionality without needing to build it yourself.
Types of Code Dependencies: An Organized Look
Dependencies come in several forms, each relevant at different stages of the development lifecycle. Understanding these types helps you manage your project's architecture and build process more effectively. Knowing what are dependencies in code involves recognizing these distinct categories.
Common Dependency Categories
Here is a look at the most common types of dependencies you will work with.
Library Dependencies: These are the most common type. They consist of third-party code you import to perform specific tasks. Examples include react for building user interfaces or pandas for data manipulation in Python.
External Modules: This is a broad term for any code outside your immediate project. It includes libraries, frameworks, and any other packages you pull into your tech stack from an external registry.
Internal (Modular) Dependencies: These exist inside your project's codebase. When you structure your application into distinct modules, one module might require another to function. This creates a dependency between internal parts of your code.
Build Dependencies: These are tools required to build or compile your project. They are not needed for the final application to run, but they are essential during the development and compilation phase. A code transpiler like Babel is a classic example.
Compile-time Dependencies: These are similar to build dependencies. They are necessary only when the code is being compiled. For example, a C++ project might depend on header files that are not needed once the executable is created.
Runtime Dependencies: These are required when the application is actually running. A database connector, for instance, is a runtime dependency. The application needs it to connect to the database and execute queries in the production environment.
Transitive Dependencies
A critical concept is the transitive or indirect dependency. These are the dependencies of your dependencies. If your project uses Library A, and Library A uses Library B, then your project has a transitive dependency on Library B.
It's useful to distinguish this from a runtime dependency, which is any component your application needs to execute correctly in a live environment. While the two concepts often overlap, they are not identical.
Practical Example
Imagine you're building a web application using Node.js:
Direct Dependency: You add a library called
Auth-Masterto your project to handle user logins.Auth-Masteris a direct dependency.Transitive Dependency:
Auth-Masterrequires another small utility library,Token-Gen, to create secure session tokens. You didn't addToken-Genyourself, but your project now depends on it transitively.Runtime Dependency: For the application to function at all, it must be executed by the Node.js runtime environment. Node.js is a runtime dependency. In this case, both
Auth-MasterandToken-Genare also runtime dependencies because they are needed when the application is running to manage logins.
This illustrates that a component (Token-Gen) can be both transitive and runtime. The key difference is that "transitive" describes how you acquired the dependency (indirectly), while "runtime" describes when you need it (during execution).
These can become complex and are a major source of security vulnerabilities and license conflicts. According to the 2025 Open Source Security and Risk Analysis (OSSRA) report, 64% of open source components in applications are transitive dependencies. This shows how quickly they can multiply within a project. The tech publication DEV also points out the importance of tracking external, internal, and transitive dependencies to maintain a healthy codebase.
Why Code Dependencies Matter (and Why You Should Care)
Effective dependency management is not just an administrative task; it is central to building reliable, secure, and high-performing software. Neglecting them can introduce significant risks into your project.
Imagine a team launching a new feature, only to have the entire application crash during peak hours. After a frantic investigation, the culprit was identified: an unpatched vulnerability in an old third-party library. A simple version update, made months ago by the library's author, would have prevented the entire outage. Examining what are dependencies in code shows their direct link to project health.
1. Code Quality & Maintenance
Understanding dependencies is fundamental to good software architecture. It helps you structure code logically and predict the impact of changes. When one part of the system is modified, knowing what depends on it prevents unexpected breakages.
As the software analysis platform CodeSee explains it: “When Module A requires … Module B … we say Module A has a dependency on Module B.” This simple statement forms the basis of dependency graphs, which visualize how different parts of your code are interconnected, making maintenance much more predictable.
2. Security
Dependencies are a primary vector for security vulnerabilities. When you import a library, you are also importing any security flaws it may contain. Malicious actors frequently target popular open-source libraries to launch widespread attacks.
The threat is significant. According to the 2025 OSSRA report, a staggering 86% of audited applications contained open source vulnerabilities. The National Institute of Standards and Technology (NIST) provides extensive guidance on software supply chain security, recommending continuous monitoring and validation of third-party components as a core practice. Properly managing your dependencies is your first line of defense.
3. Performance
The performance of your application is directly tied to its dependencies. A slow or resource-intensive library can become a bottleneck, degrading the user experience. Large dependencies can also increase your application's bundle size, leading to longer load times for web applications.
By analyzing your dependencies, you can identify which ones are contributing most to performance issues. Sometimes, replacing a heavy library with a more lightweight alternative or writing a custom solution can lead to significant performance gains. This optimization is impossible without a clear picture of your project's dependency tree.
4. Legal & Licensing
Every external dependency you use comes with a software license. These licenses dictate how you can use, modify, and distribute the code. Failing to comply with these terms can lead to serious legal consequences.
License compatibility is a major concern. For example, using a library with a "copyleft" license (like the GPL) in a proprietary commercial product may require you to open-source your own code. The 2025 OSSRA report found that 56% of audited applications had license conflicts, many of which arose from transitive dependencies. Tools mentioned by DEV are essential for tracking and ensuring license compliance.
Managing Code Dependencies Like a Pro
Given their impact, you need a systematic approach to managing dependencies. Modern development relies on a combination of powerful tools and established best practices to keep dependencies in check. Truly understanding what are dependencies in code means learning how to control them.

a. Dependency Management Tools
Package managers are the foundation of modern dependency management. They automate the process of finding, installing, and updating libraries. Each major programming ecosystem has its own set of tools.
npm (Node.js): The default package manager for JavaScript. It manages packages listed in a
package.jsonfile.pip (Python): Used to install and manage Python packages. It typically works with a
requirements.txtfile.Maven / Gradle (Java): These are build automation tools that also handle dependency management for Java projects.
Yarn / pnpm: Alternatives to npm that offer improvements in performance and security for managing JavaScript packages.
These tools streamline the installation process and help resolve version conflicts between different libraries.
b. Virtual Environments
A virtual environment is an isolated directory that contains a specific version of a language interpreter and its own set of libraries. This practice prevents dependency conflicts between different projects on the same machine.
For example, Project A might need version 1.0 of a library, while Project B needs version 2.0. Without virtual environments, installing one would break the other. DEV details tools like pipenv and Poetry for Python, which create these isolated environments automatically. For Node.js, nvm (Node Version Manager) allows you to switch between different Node.js versions, each with its own global packages.
c. Semantic Versioning
Semantic Versioning (SemVer) is a versioning standard that provides meaning to version numbers. A version is specified as MAJOR.MINOR.PATCH.
MAJOR version change indicates an incompatible API change.
MINOR version change adds functionality in a backward-compatible manner.
PATCH version change makes backward-compatible bug fixes.
As noted by CodeSee, adhering to SemVer is crucial. It allows you to specify version ranges for your dependencies safely. For instance, you can configure your package manager to accept any new patch release automatically but require manual approval for a major version update that could break your code.
d. Visualization & Analysis Tools
For complex projects, it can be difficult to see the full dependency tree. This is where visualization and analysis tools come in.
Software Composition Analysis (SCA) Tools: These tools scan your project to identify all open-source components, including transitive dependencies. They check for known security vulnerabilities and potential license conflicts. The OWASP Dependency-Check project is a well-known open-source SCA tool.
Dependency Graph Visualizers: Tools like CodeSee's dependency maps can generate interactive diagrams of your codebase. These visualizations help you understand how modules interact and identify areas of high complexity or tight coupling.
e. Refactoring for Modularity
The best way to manage dependencies is to design a system with as few of them as needed. This involves writing modular code with clean interfaces. Principles like SOLID encourage loose coupling, where components are independent and interact through stable APIs.
A benefit of modular programming is that it makes code more reusable and easier to maintain. Research from educational resources on software design confirms that breaking down a system into independent modules improves readability and simplifies debugging. When you need to change one module, the impact on the rest of the system is minimized, which is a core goal of good dependency management.
Real-World Example in OOP
Object-Oriented Programming (OOP) provides a clear illustration of dependency principles. Improper dependencies between classes can make a system rigid and difficult to maintain. This example shows why thinking about what are dependencies in code is so important at the architectural level.
Imagine two classes in an HR system: Employee and HR.
Java |
In this case, the HR class has a direct dependency on the Employee class. If the Employee class changes—for example, if the getSalary() method is renamed or its return type changes—the HR class will break. This is a simple example of a direct dependency.
A better approach is to depend on abstractions, not concrete implementations. For instance, testing classes should only rely on the public interfaces of the classes they test. This principle limits breakage when internal implementation details change, making the codebase more resilient and maintainable. For scope and technique, see unit vs functional testing and regression vs unit testing.
Conclusion
Dependencies are an integral part of modern software development. They enable us to build powerful applications by standing on the shoulders of giants. However, this power comes with responsibility. A failure to manage dependencies is a failure to manage your project's quality, security, and performance.
By understanding the different types of dependencies, from external libraries to internal modules, you can make more informed architectural decisions. Using the right tools and best practices—like package managers, virtual environments, and SCA scanners—transforms dependency management from a chore into a strategic advantage. It leads to better code, safer deployments, and smoother collaboration. The central question of what are dependencies in code is one every developer must answer to build professional-grade software.
FAQ Section
1) What are examples of dependencies?
Dependencies include software libraries (e.g., Lodash), external modules (npm packages), internal shared utilities, test frameworks (a build dependency), and runtime libraries like database connectors.
2) What do you mean by dependencies?
Dependencies are external or internal pieces of code that your project requires to function correctly. Your code "depends" on them to execute its tasks.
3) What are the dependencies of a programming language?
These include its runtime environment (like an interpreter or compiler), its standard library of built-in functions, and its toolchain, which consists of package managers and build tools.
4) What are dependencies on a computer?
These are system-level libraries or packages an application needs to run. Examples include graphics drivers, system fonts like OpenSSL, or installed runtimes such as the Java Virtual Machine (JVM) or .NET Framework.
Shivam Agarwal

Figma Design To Code: Step-by-Step Guide 2025
The gap between a finished design and functional code is a known friction point in product development. For non-coders, it’s a barrier. For busy frontend developers, it's a source of repetitive work that consumes valuable time. The process of translating a Figma design to code, while critical, is often manual and prone to error.
This article introduces the concept of Figma design to code automation. We will walk through how Dualite Alpha bridges the design-to-development gap. It offers a way to quickly turn static designs into usable, production-ready frontend code, directly in your browser.
Why “Figma Design to Code” Matters
UI prototyping is the stage where interactive mockups are created. The design handoff is the point where these approved designs are passed to developers for implementation. Dualite fits into this ecosystem by automating the handoff, turning a visual blueprint into a structural codebase.
The benefits are immediate and measurable.
Saves Time: Research shows that development can be significantly faster with automated systems. A study by Sparkbox found that using a design system made a simple form page 47% faster to develop versus coding it from scratch. This frees up developers to focus on complex logic.
Reduces Errors: Manual translation introduces human error. Automated conversion ensures visual and structural consistency between the Figma file and the initial codebase. According to Aufait UX, teams using design systems can reduce errors by as much as 60%.
Smoother Collaboration: Tools that automate code generation act as a common language between designers and developers. They reduce the back-and-forth communication that often plagues projects. Studies on designer-developer collaboration frequently point to communication issues as a primary challenge.

This approach helps both non-coders and frontend developers. It provides a direct path to creating responsive layouts and functional components, accelerating the entire development lifecycle.
Getting Started with Dualite Alpha
Dualite Alpha is a platform that handles the entire workflow from design to deployment. It operates within your browser, requiring no server storage for your projects. This enhances security and privacy.
Its core strengths are:
Direct Figma Integration: Dualite works with Figma without needing an extra plugin. You can connect your designs directly.
Automated Code Generation: The platform intelligently interprets Figma designs to produce clean, structured code.
Frontend Framework Support: It generates code for React, Tailwind CSS, and plain HTML/CSS, fitting into modern tech stacks.

Dualite serves as a powerful accelerator for any team looking to improve its Figma design to code workflow.
Figma Design to Code: Step-by-Step Tutorial
The following tutorial breaks down the process of converting your designs into code. For a visual guide, the video below offers a complete masterclass, showing how to build a functional web application from a Figma file using Dualite Alpha. The demonstration covers building a login page, handling page redirection, making components functional, and ensuring responsiveness.

Step 1: Open Dualite and Connect Your Figma Account
First, go to dualite.dev and select "Try Dualite Now" to open the Dualite (Alpha) interface. Within the start screen, click on the Figma icon and then "Connect Figma." You will be prompted to authorize the connection via an oAuth window. It is crucial to select the Figma account that owns the design file you intend to use.



Step 2: Copy the Link to Your Figma Selection
In Figma, open your design file and select the specific Frame, Component, or Instance that you want to convert. Right-click on your selection, go to "Copy/Paste as," and choose "Copy link to selection."
Step 3: Import Your Figma Design into Dualite
Return to Dualite and paste the copied URL into the "Import from Figma" field. Click "Import." Dualite will process the link, and a preview of your design will appear along with a green checkmark to indicate that the design has been recognized.


Step 4: Confirm and Continue
Review the preview to ensure it accurately represents your selection. If everything looks correct, click "Continue with this design" to proceed.
Step 5: Select the Target Stack and Generate the Initial Build
In the "Framework" dropdown menu, choose your desired stack, such as React. Then, in the chat box, provide a simple instruction like, "Build this website based on the Figma file." Dualite will then parse the imported design and generate the working code along with a live preview.

Step 6: Iterate and Refine with Chat Commands
You can make further changes to your design using short, conversational follow-ups in the chat. For instance, you can request to make the hero section responsive for mobile, turn a button into a link, or extract the navigation bar into a reusable component. This iterative chat feature is designed for making stepwise changes after the initial build.
Step 7: Inspect, Edit, and Export Your Code
You can switch between the "Preview" and "Code" views using the toggle at the top of the screen. This allows you to open files, tweak styles or logic, and save your changes directly within Dualite’s editor. When you are finished, you can download the code as a ZIP file to use it locally. Alternatively, you can push the code to GitHub with the built-in two-way sync, which allows you to import an existing repository, push changes, or create a new repository from your project.
Step 8: Deploy Your Website
Finally, to publish your site, click "Deploy" in the top-right corner and connect your Netlify account.
This is highly useful for teams that need to prototype quickly. It also strengthens collaboration between design and development by providing a shared, code-based foundation. Research from zeroheight shows that design-to-development handoff efficiency can increase by 50% with such systems.
Conclusion
Dualite simplifies the Figma design to code process. It provides a practical, efficient solution for turning visual concepts into tangible frontend code.
The platform benefits both designers and developers. It creates a bridge between roles, reducing friction and speeding up the development cycle. By adopting a hybrid approach—using generated code as a foundation and refining it—teams can gain a significant advantage in their workflow.
The future of frontend development is about working smarter, and tools like Dualite are central to that objective. The efficiency of a Figma design to code workflow is a clear step forward. A focus on better tools will continue to improve the Figma design to code process. This makes the Figma design to code strategy a valuable one. For any team, improving the Figma design to code pipeline is a worthy goal.
FAQ Section
1) Can I convert Figma design to code?
Yes. Tools like Dualite let you convert Figma designs into React, HTML/CSS, or Tailwind CSS code with a few clicks. Figma alone provides only basic CSS snippets, not full layouts or structure.
2) Can ChatGPT convert Figma design to code?
Not directly. ChatGPT cannot parse Figma files. You can describe a design and ask for code suggestions, but it cannot generate accurate front-end layouts from actual Figma prototypes.
3) Does Figma provide code for design?
Figma’s Dev Mode offers CSS and SVG snippets, but not full production-ready code. Most developers still hand-write the structure, style, and logic based on those hints.
4) What tool converts Figma to code?
Dualite is one such tool that turns Figma designs into clean code quickly. Other tools exist, but users report mixed results—often fine for prototypes, but not always clean or maintainable.
Figma & No-code
Shivam Agarwal

Secure Code Review Checklist for Developers
Writing secure code is non-negotiable in modern software development. A single vulnerability can lead to data breaches, system downtime, and a loss of user trust. The simplest, most effective fix is to catch these issues before they reach production. This is accomplished through a rigorous code review process, guided by a secure code review checklist.
A secure code review checklist is a structured set of guidelines and verification points used during the code review process. It ensures that developers consistently check for common security vulnerabilities and adhere to best practices. For instance, a checklist item might ask, "Is all user-supplied input validated and sanitized to prevent injection attacks (e.g., SQLi, XSS)?"
This article provides a detailed guide to creating and using such a checklist, helping you build more resilient and trustworthy applications from the ground up. We will cover why a checklist is essential, how to prepare for a review, core items to include, and how to integrate automation to make the process efficient and repeatable.
TL;DR: Secure Code Review Checklist
A secure code review checklist is a structured guide to ensure code is free from common security flaws before reaching production. The core items include:
Input Validation – Validate and sanitize all user input on the server side.
Output Encoding – Use context-aware encoding to prevent XSS.
Authentication & Authorization – Enforce server-side checks, hash & salt passwords, follow least privilege.
Error Handling & Logging – Avoid leaking sensitive info, log security-relevant events without secrets.
Data Encryption – Encrypt data at rest and in transit using strong standards (TLS 1.2+, AES-256).
Session Management – Secure tokens, timeouts, HttpOnly & Secure cookies.
Dependency Management – Use SCA tools, keep libraries updated.
Logging & Monitoring – Track suspicious activity, monitor alerts, protect log files.
Threat Modeling – Continuously validate assumptions and attack vectors.
Secure Coding Practices – Follow OWASP, CERT, and language-specific standards.
Use this checklist during manual reviews, supported by automation (SAST/SCA tools), to catch vulnerabilities early, reduce costs, and standardize secure development practices.
Why Use a Secure Code Review Checklist?
Code quality and vulnerability assessment are two sides of the same coin. A checklist provides a systematic approach to both. It helps standardize the review process across your entire team, ensuring no critical security checks are overlooked. This is why we use a secure code review checklist.
The primary benefit is catching security issues early in the development lifecycle. Fixing a vulnerability during development is significantly less costly and time-consuming than patching it in production. According to a report by the Systems Sciences Institute at IBM, a bug found in production is six times more expensive to fix than one found during design and implementation.
Organizations like the Open Web Application Security Project (OWASP) provide extensive community-vetted resources that codify decades of security wisdom. A checklist helps you put this wisdom into practice. Even if the checklist items seem obvious, the act of using one frames the reviewer's mindset, focusing their attention specifically on security concerns. This focus alone significantly increases the likelihood of detecting vulnerabilities that might otherwise be missed.
Standardization: Ensures every piece of code gets the same security scrutiny.
Efficiency: Guides reviewers to the most critical areas quickly.
Early Detection: Finds and fixes flaws before they become major problems.
Knowledge Sharing: Acts as a teaching tool for junior developers.
Preparing Your Secure Code Review
A successful review starts before you look at a single line of code. Proper preparation ensures your efforts are focused and effective. Without a plan, reviews can become unstructured and miss critical risks.

Threat Modeling First
Before reviewing code, you must understand the application's potential threats. Threat modeling is a process where you identify security risks and potential vulnerabilities.
Ask questions like:
Where does the application handle sensitive data?
What are the entry points for user input?
How do different components authenticate with each other?
What external systems does the application trust?
This analysis helps you pinpoint high-risk areas of the codebase architecture that demand the most attention.
Define Objectives
Clarify the goals of the review. Are you hunting for specific bugs, verifying compliance with a security standard, or improving overall code quality? Defining your objectives helps focus the review and measure its success.
Set Scope
You do not have to review the entire codebase at once. Start with the most critical and high-risk code segments identified during threat modeling.
Focus initial efforts on:
Authentication and Authorization Logic: Code that handles user logins and permissions.
Session Management: Functions that create and manage user sessions.
Data Encryption Routines: Any code that encrypts or decrypts sensitive information.
Input Handling: Components that process data from users or external systems.
Gather the Right Tools and People
Assemble a review team with a good mix of skills. Include the developer who wrote the code, a security-minded developer, and, if possible, a dedicated security professional. This combination of perspectives provides a more thorough assessment.
Equip the team with the proper tools, including access to the project's documentation and specialized software. For instance, static analysis tools can automatically scan for vulnerabilities. For threat modeling, you might use OWASP Threat Dragon, and for automation, a platform like GitHub Actions can integrate security checks directly into the workflow.
Core Secure Code Review Checklist Items
This section contains the fundamental items that should be part of any review. Each one targets a common area where security vulnerabilities appear.
1) Input Validation
Attackers exploit applications by sending malicious or unexpected input. Proper input validation is your first line of defense.
Validate on the Server Side: Never trust client-side validation alone. Attackers can easily bypass it. Always re-validate all inputs on the server.
Classify Data: Separate data into trusted (from internal systems) and untrusted (from users or external APIs) sources. Scrutinize all untrusted data.
Centralize Routines: Create and use a single, well-tested library for all input validation. This avoids duplicated effort and inconsistent logic.
Canonicalize Inputs: Convert all input into a standard, simplified form before processing. For example, enforce UTF-8 encoding to prevent encoding-based attacks.
2) Output Encoding
Output encoding prevents attackers from injecting malicious scripts into the content sent to a user's browser. This is the primary defense against Cross-Site Scripting (XSS).
Encode on the Server: Always perform output encoding on the server, just before sending it to the client.
Use Context-Aware Encoding: The method of encoding depends on where the data will be placed. Use specific routines for HTML bodies, HTML attributes, JavaScript, and CSS.
Utilize Safe Libraries: Employ well-tested libraries provided by your framework to handle encoding. Avoid writing your own encoding functions.
3) Authentication & Authorization
Authentication confirms a user's identity, while authorization determines what they are allowed to do. Flaws in these areas can give attackers complete control.
Enforce on the Server: All authentication and authorization checks must occur on the server.
Use Tested Services: Whenever possible, integrate with established identity providers or use your framework's built-in authentication mechanisms.
Centralize Logic: Place all authorization checks in a single, reusable location to ensure consistency.
Hash and Salt Passwords: Never store passwords in plain text. Use a strong, adaptive hashing algorithm like Argon2 or bcrypt with a unique salt for each user.
Use Vague Error Messages: On login pages, use generic messages like "Invalid username or password." Specific messages ("User not found") help attackers identify valid accounts.
Secure External Credentials: Protect API keys, database credentials, and other secrets. Store them outside of your codebase using a secrets management tool.
4) Error Handling & Logging
Proper error handling prevents your application from leaking sensitive information when something goes wrong.
Avoid Sensitive Data in Errors: Error messages shown to users should never contain stack traces, database queries, or other internal system details.
Log Sufficient Context: Your internal logs should contain enough information for debugging, such as a timestamp, the affected user ID (if applicable), and the error details.
Do Not Log Secrets: Ensure that passwords, API keys, session tokens, and other sensitive data are never written to logs.
5) Data Encryption
Data must be protected both when it is stored (at rest) and when it is being transmitted (in transit).
Encrypt Data in Transit: Use Transport Layer Security (TLS) 1.2 or higher for all communication between the client and server.
Encrypt Data at Rest: Protect sensitive data stored in databases, files, or backups.
Use Proven Standards: Implement strong, industry-accepted encryption algorithms like AES-256. For databases, use features like Transparent Data Encryption (TDE) or column-level encryption for the most sensitive fields.
6) Session Management & Access Controls
Once a user is authenticated, their session must be managed securely. Access controls ensure users can only perform actions they are authorized for.
Secure Session Tokens: Generate long, random, and unpredictable session identifiers. Do not include any sensitive information within the token itself.
Expire Sessions Properly: Sessions should time out after a reasonable period of inactivity. Provide users with a clear log-out function that invalidates the session on the server.
Guard Cookies: Set the
SecureandHttpOnlyflags on session cookies. This prevents them from being sent over unencrypted connections or accessed by client-side scripts.Enforce Least Privilege: Users and system components should only have the minimum permissions necessary to perform their functions.
7) Dependency Management
Modern applications are built on a foundation of third-party libraries and frameworks. A vulnerability in one of these dependencies is a vulnerability in your application.
Use Software Composition Analysis (SCA) Tools: These tools scan your project to identify third-party components with known vulnerabilities.
Keep Dependencies Updated: Regularly update your dependencies to their latest stable versions. Studies from organizations like Snyk regularly show that a majority of open-source vulnerabilities have fixes available. A 2025 Snyk report showed projects using automated dependency checkers fix vulnerabilities 40% faster.
8) Logging & Monitoring
Secure logging and monitoring help you detect and respond to attacks in real-time.
Track Suspicious Activity: Log security-sensitive events such as failed login attempts, access-denied errors, and changes to permissions.
Monitor Logs: Use automated tools to monitor logs for patterns that could indicate an attack. Set up alerts for high-priority events.
Protect Your Logs: Ensure that log files are protected from unauthorized access or modification.
9) Threat Modeling
During the review, continuously refer back to your threat model. This helps maintain focus on the most likely attack vectors.
Review Data Flows: Trace how data moves through the application.
Validate Trust Boundaries: Pay close attention to points where the application interacts with external systems or receives user input.
Question Assumptions: Could an attacker manipulate this data flow? Could they inject code or bypass a security control?
10) Code Readability & Secure Coding Standards
Clean, readable code is easier to secure. Ambiguous or overly complex logic can hide subtle security flaws.
Write Clear Code: Use meaningful variable names, add comments where necessary, and keep functions short and focused.
Use Coding Standards: Adhere to established secure coding standards for your language. Some great resources are the OWASP Secure Coding Practices, the SEI CERT Coding Standards, and language-specific guides.
11) Secure Data Storage
How and where you store sensitive data is critical. This goes beyond just encrypting the database.
Protect Backups: Ensure that database backups are encrypted and stored in a secure location with restricted access.
Sanitize Data: When using production data in testing or development environments, make sure to sanitize it to remove any real user information.
Limit Data Retention: Only store sensitive data for as long as it is absolutely necessary. Implement and follow a clear data retention policy.
Automated Tools to Boost Your Checklist
Manual reviews are essential for understanding context and business logic, but they can be slow and prone to human error. For smaller teams, free and open-source tools like SonarQube, Snyk, and Semgrep perfectly complement a manual secure code review checklist by catching common issues quickly and consistently.
Integrate SAST and SCA into CI/CD
Integrate Static Application Security Testing (SAST) and Software Composition Analysis (SCA) tools directly into your Continuous Integration/Continuous Deployment (CI/CD) pipeline. This automates the initial security scan on every code commit.
SAST Tools: These tools analyze your source code without executing it. They are excellent at finding vulnerabilities like SQL injection, buffer overflows, and insecure configurations.
SCA Tools: These tools identify all the open-source libraries in your codebase and check them against a database of known vulnerabilities.
Configure Security-Focused Rules
Configure your automated tools to enforce specific security rules tied to standards like OWASP Top 10 or the SEI CERT standards. This ensures that the automated checks are directly connected to your security requirements.
Popular Static Analysis Tools
Several tools can help automate parts of your review:
PVS-Studio: A static analyzer for C, C++, C#, and Java code.
Semgrep: A fast, open-source static analysis tool that supports many languages and allows for custom rules.
SonarQube: An open-platform to manage code quality, which includes security analysis features.

Running The Review
With your preparation complete and checklist in hand, it is time to conduct the review. A structured approach makes the process more efficient and less draining for the participants.
Timebox Your Sessions
Limit each review session to about 60-90 minutes. Longer sessions can lead to fatigue and reduced focus, making it more likely that reviewers will miss important issues. It is better to have multiple short, focused sessions than one long, exhaustive one.
Apply the Checklist Systematically
Work through your checklist steadily. Start with the high-risk areas you identified during threat modeling. Use a combination of automated tools and manual inspection.
Run Automated Scans First: Let SAST and SCA tools perform an initial pass to catch low-hanging fruit.
Manually Inspect High-Risk Code: Use your expertise and the checklist to examine authentication, authorization, and data handling logic.
Validate Business Logic: Check for flaws in the application's logic that an automated tool would miss.
Track Metrics for Improvement
To make your process repeatable and measurable, track key metrics.
Metric | Description | Purpose | Tracking Tools |
Inspection Rate | Lines of code reviewed per hour. | Helps in planning future reviews. | Code review systems (Crucible, Gerrit) or custom dashboards (Grafana, Tableau) pulling data from version control. |
Defect Density | Number of defects found per 1,000 lines of code. | Measures code quality over time. | Static analysis tools (SonarQube) and issue trackers (Jira, GitHub Issues). |
Time to Remediate | Time taken to fix a reported issue. | Measures the efficiency of your response process. | Issue trackers like Jira, GitHub Issues, Asana, or service desk software like Zendesk. |
Keeping Your Process Up to Date
Security is not a one-time activity. The threat environment is constantly changing, and your review process must adapt. An effective secure code review checklist is a living document.
Update for New Threats
Regularly review and update your checklist to include checks for new types of vulnerabilities. Stay informed by following security publications from organizations like NIST and OWASP. When a new major vulnerability is disclosed (like Log4Shell), update your checklist to include specific checks for it.
Build a Security-First Mindset
The ultimate goal is to create a team where everyone thinks about security. Use the code review process as an educational opportunity. When you find a vulnerability, explain the risk and the correct way to fix it. This continuous training builds a stronger, more security-aware engineering team.
Sample “Starter” Checklist
Here is a starter secure code review checklist based on the principles discussed. You can use this as a foundation and customize it for your specific tech stack and application. This is structured in a format you can use in a GitHub pull request template.
For a more detailed baseline, the OWASP Code Review Guide and the associated Quick Reference Guide are excellent resources.
Input Validation
[Critical]Is the application protected against injection attacks (SQLi, XSS, Command Injection)?[Critical]Is all untrusted input validated on the server side?[High]Is input checked for length, type, and format?[Medium]Is a centralized input validation routine used?
Authentication & Authorization
[Critical]Are all sensitive endpoints protected with server-side authentication checks?[Critical]Are passwords hashed using a strong, salted algorithm (e.g., Argon2, bcrypt)?[Critical]Are authorization checks performed based on the user's role and permissions, not on incoming parameters?[High]Are account lockout mechanisms in place to prevent brute-force attacks?[High]Does the principle of least privilege apply to all user roles?
Session Management
[Critical]Are session tokens generated with a cryptographically secure random number generator?[High]Are session cookies configured with theHttpOnlyandSecureflags?[High]Is there a secure log-out function that invalidates the session on the server?[Medium]Do sessions time out after a reasonable period of inactivity?
Data Handling & Encryption
[Critical]Is all sensitive data encrypted in transit using TLS 1.2+?[High]Is sensitive data encrypted at rest in the database and in backups?[High]Are industry-standard encryption algorithms (e.g., AES-256) used?[Medium]Are sensitive data or system details avoided in error messages?
Dependency Management
[High]Has an SCA tool been run to check for vulnerable third-party libraries?[High]Are all dependencies up to their latest secure versions?
Logging & Monitoring
[Critical]Are secrets (passwords, API keys) excluded from all logs?[Medium]Are security-relevant events (e.g., failed logins, access denials) logged?
Conclusion
Building secure software requires a deliberate and systematic effort. This is why your team needs a secure code review checklist. It provides structure, consistency, and a security-first focus to your development process. It transforms code review from a simple bug hunt into a powerful defense against attacks.
For the best results, combine the discipline of a powerful secure code review checklist with automated tools and the contextual understanding that only human reviewers can provide. This layered approach ensures you catch a wide range of issues, from simple mistakes to complex logic flaws. Begin integrating these principles and build your own secure code review checklist today. Your future self will thank you for the secure and resilient applications you create.
FAQs
1) What are the 7 steps to review code?
A standard secure code review process involves seven steps:
Define review goals and scope.
Gather the code and related artifacts.
Run automated SAST/SCA tools for an initial scan.
Perform a manual review using a checklist, focusing on high-risk areas.
Document all findings clearly with actionable steps.
Prioritize the documented issues based on risk.
Remediate the issues and verify the fixes.
2) How to perform a secure code review?
To perform a secure code review, you should first define your objectives and scope, focusing on high-risk application areas. Then, use a checklist to guide your manual inspection, and supplement your review with SAST and SCA tools. Document your findings and follow up to ensure fixes are correctly implemented.
3) What is a code review checklist?
A secure code review checklist is a structured list of items that guides a reviewer. It ensures consistent and thorough coverage of critical security areas like input validation, authentication, and encryption, helping to prevent common vulnerabilities and avoid gaps in the review process.
4) What are SAST tools during code review?
SAST stands for Static Application Security Testing. These tools automatically scan an application's source code for known vulnerability patterns without running the code. Tools like PVS-Studio, Semgrep, or SonarQube can find potential issues such as SQL injection, buffer overflows, and insecure coding patterns early in development.
5) How long should a secure code review take per 1,000 LOC?
There isn't a strict time rule, as the duration depends on several factors. However, a general industry guideline for a manual review is between 1 to 4 hours per 1,000 lines of code (LOC).
Factors that influence this timing include:
Code Complexity: Complex business logic or convoluted code will take longer to analyze than simple, straightforward code.
Reviewer's Experience: A seasoned security professional will often be faster and more effective than someone new to code review.
Programming Language: Some languages and frameworks have more inherent security risks and require more scrutiny.
Scope and Depth: A quick check for the OWASP Top 10 vulnerabilities is much faster than a deep, architectural security review.
LLM & Gen AI
Shivam Agarwal

Code Dependencies: What They Are and Why They Matter
Dependencies in code are like ingredients for a recipe. When baking a cake, you don't grow the wheat and grind your own flour; you purchase it ready-made. Similarly, developers use pre-written code packages, known as libraries or modules, to construct complex applications without writing every single line from scratch.
These pre-made components are dependencies—external or internal pieces of code your project needs to function correctly. Managing them properly impacts your application's quality, security, and performance. When you build software, you integrate these parts created by others, which introduces a reliance on that external code. Your project's success is tied to the quality and maintenance of these components.
This article provides a detailed look into software dependencies. We will cover what they are, the different types you will encounter, and why managing them is a critical skill for any engineering team. We will also present strategies and tools to handle them effectively.
What “Dependency” Really Means in Programming
In programming, a dependency is a piece of code that your project relies on to function. These are often external libraries or modules that provide specific functionality. Think of them as pre-built components you use to add features to your application.

In software development, it's useful to distinguish between the general concept of dependence and the concrete term dependency.
Dependence is the state of relying on an external component for your code to function. It describes the "need" itself.
A dependency is the actual component you are relying on, such as a specific library, package, or framework.
This dependence means a change in a dependency can affect your code. For instance, if a library you use is updated or contains a bug, it directly impacts your project because of this reliance. Recognizing this is a foundational principle in software construction.
Libraries, External Modules, and Internal Code
It's useful to differentiate between a few common terms:
Software Libraries: These are collections of pre-written code that developers can use. For example, a library like NumPy in Python might offer functions for complex mathematical calculations. You import the library and call its functions.
External Modules: This is a similar concept. An external module is a self-contained unit of code that exists outside your primary project codebase. Package managers install these modules for you to use. A well-known example is React, which is used for building user interfaces.
Internal Modular Code: These are dependencies within your own project. You might break your application into smaller, reusable modules. For instance, a
userAuth.jsmodule could be used by both the authentication and profile sections of your application, creating an internal dependency.
A Community Perspective
Developers often use analogies to explain this concept. One clear explanation comes from a Reddit user, who states: “Software dependencies are external things your program relies on to work. Most commonly this means other libraries.” This simple definition captures the core idea perfectly.
Another helpful analogy from the same discussion simplifies it further: “...you rely on someone else to do the actual work and you just depend on it.” This highlights the nature of using a dependency. You integrate its functionality without needing to build it yourself.
Types of Code Dependencies: An Organized Look
Dependencies come in several forms, each relevant at different stages of the development lifecycle. Understanding these types helps you manage your project's architecture and build process more effectively. Knowing what are dependencies in code involves recognizing these distinct categories.
Common Dependency Categories
Here is a look at the most common types of dependencies you will work with.
Library Dependencies: These are the most common type. They consist of third-party code you import to perform specific tasks. Examples include react for building user interfaces or pandas for data manipulation in Python.
External Modules: This is a broad term for any code outside your immediate project. It includes libraries, frameworks, and any other packages you pull into your tech stack from an external registry.
Internal (Modular) Dependencies: These exist inside your project's codebase. When you structure your application into distinct modules, one module might require another to function. This creates a dependency between internal parts of your code.
Build Dependencies: These are tools required to build or compile your project. They are not needed for the final application to run, but they are essential during the development and compilation phase. A code transpiler like Babel is a classic example.
Compile-time Dependencies: These are similar to build dependencies. They are necessary only when the code is being compiled. For example, a C++ project might depend on header files that are not needed once the executable is created.
Runtime Dependencies: These are required when the application is actually running. A database connector, for instance, is a runtime dependency. The application needs it to connect to the database and execute queries in the production environment.
Transitive Dependencies
A critical concept is the transitive or indirect dependency. These are the dependencies of your dependencies. If your project uses Library A, and Library A uses Library B, then your project has a transitive dependency on Library B.
It's useful to distinguish this from a runtime dependency, which is any component your application needs to execute correctly in a live environment. While the two concepts often overlap, they are not identical.
Practical Example
Imagine you're building a web application using Node.js:
Direct Dependency: You add a library called
Auth-Masterto your project to handle user logins.Auth-Masteris a direct dependency.Transitive Dependency:
Auth-Masterrequires another small utility library,Token-Gen, to create secure session tokens. You didn't addToken-Genyourself, but your project now depends on it transitively.Runtime Dependency: For the application to function at all, it must be executed by the Node.js runtime environment. Node.js is a runtime dependency. In this case, both
Auth-MasterandToken-Genare also runtime dependencies because they are needed when the application is running to manage logins.
This illustrates that a component (Token-Gen) can be both transitive and runtime. The key difference is that "transitive" describes how you acquired the dependency (indirectly), while "runtime" describes when you need it (during execution).
These can become complex and are a major source of security vulnerabilities and license conflicts. According to the 2025 Open Source Security and Risk Analysis (OSSRA) report, 64% of open source components in applications are transitive dependencies. This shows how quickly they can multiply within a project. The tech publication DEV also points out the importance of tracking external, internal, and transitive dependencies to maintain a healthy codebase.
Why Code Dependencies Matter (and Why You Should Care)
Effective dependency management is not just an administrative task; it is central to building reliable, secure, and high-performing software. Neglecting them can introduce significant risks into your project.
Imagine a team launching a new feature, only to have the entire application crash during peak hours. After a frantic investigation, the culprit was identified: an unpatched vulnerability in an old third-party library. A simple version update, made months ago by the library's author, would have prevented the entire outage. Examining what are dependencies in code shows their direct link to project health.
1. Code Quality & Maintenance
Understanding dependencies is fundamental to good software architecture. It helps you structure code logically and predict the impact of changes. When one part of the system is modified, knowing what depends on it prevents unexpected breakages.
As the software analysis platform CodeSee explains it: “When Module A requires … Module B … we say Module A has a dependency on Module B.” This simple statement forms the basis of dependency graphs, which visualize how different parts of your code are interconnected, making maintenance much more predictable.
2. Security
Dependencies are a primary vector for security vulnerabilities. When you import a library, you are also importing any security flaws it may contain. Malicious actors frequently target popular open-source libraries to launch widespread attacks.
The threat is significant. According to the 2025 OSSRA report, a staggering 86% of audited applications contained open source vulnerabilities. The National Institute of Standards and Technology (NIST) provides extensive guidance on software supply chain security, recommending continuous monitoring and validation of third-party components as a core practice. Properly managing your dependencies is your first line of defense.
3. Performance
The performance of your application is directly tied to its dependencies. A slow or resource-intensive library can become a bottleneck, degrading the user experience. Large dependencies can also increase your application's bundle size, leading to longer load times for web applications.
By analyzing your dependencies, you can identify which ones are contributing most to performance issues. Sometimes, replacing a heavy library with a more lightweight alternative or writing a custom solution can lead to significant performance gains. This optimization is impossible without a clear picture of your project's dependency tree.
4. Legal & Licensing
Every external dependency you use comes with a software license. These licenses dictate how you can use, modify, and distribute the code. Failing to comply with these terms can lead to serious legal consequences.
License compatibility is a major concern. For example, using a library with a "copyleft" license (like the GPL) in a proprietary commercial product may require you to open-source your own code. The 2025 OSSRA report found that 56% of audited applications had license conflicts, many of which arose from transitive dependencies. Tools mentioned by DEV are essential for tracking and ensuring license compliance.
Managing Code Dependencies Like a Pro
Given their impact, you need a systematic approach to managing dependencies. Modern development relies on a combination of powerful tools and established best practices to keep dependencies in check. Truly understanding what are dependencies in code means learning how to control them.

a. Dependency Management Tools
Package managers are the foundation of modern dependency management. They automate the process of finding, installing, and updating libraries. Each major programming ecosystem has its own set of tools.
npm (Node.js): The default package manager for JavaScript. It manages packages listed in a
package.jsonfile.pip (Python): Used to install and manage Python packages. It typically works with a
requirements.txtfile.Maven / Gradle (Java): These are build automation tools that also handle dependency management for Java projects.
Yarn / pnpm: Alternatives to npm that offer improvements in performance and security for managing JavaScript packages.
These tools streamline the installation process and help resolve version conflicts between different libraries.
b. Virtual Environments
A virtual environment is an isolated directory that contains a specific version of a language interpreter and its own set of libraries. This practice prevents dependency conflicts between different projects on the same machine.
For example, Project A might need version 1.0 of a library, while Project B needs version 2.0. Without virtual environments, installing one would break the other. DEV details tools like pipenv and Poetry for Python, which create these isolated environments automatically. For Node.js, nvm (Node Version Manager) allows you to switch between different Node.js versions, each with its own global packages.
c. Semantic Versioning
Semantic Versioning (SemVer) is a versioning standard that provides meaning to version numbers. A version is specified as MAJOR.MINOR.PATCH.
MAJOR version change indicates an incompatible API change.
MINOR version change adds functionality in a backward-compatible manner.
PATCH version change makes backward-compatible bug fixes.
As noted by CodeSee, adhering to SemVer is crucial. It allows you to specify version ranges for your dependencies safely. For instance, you can configure your package manager to accept any new patch release automatically but require manual approval for a major version update that could break your code.
d. Visualization & Analysis Tools
For complex projects, it can be difficult to see the full dependency tree. This is where visualization and analysis tools come in.
Software Composition Analysis (SCA) Tools: These tools scan your project to identify all open-source components, including transitive dependencies. They check for known security vulnerabilities and potential license conflicts. The OWASP Dependency-Check project is a well-known open-source SCA tool.
Dependency Graph Visualizers: Tools like CodeSee's dependency maps can generate interactive diagrams of your codebase. These visualizations help you understand how modules interact and identify areas of high complexity or tight coupling.
e. Refactoring for Modularity
The best way to manage dependencies is to design a system with as few of them as needed. This involves writing modular code with clean interfaces. Principles like SOLID encourage loose coupling, where components are independent and interact through stable APIs.
A benefit of modular programming is that it makes code more reusable and easier to maintain. Research from educational resources on software design confirms that breaking down a system into independent modules improves readability and simplifies debugging. When you need to change one module, the impact on the rest of the system is minimized, which is a core goal of good dependency management.
Real-World Example in OOP
Object-Oriented Programming (OOP) provides a clear illustration of dependency principles. Improper dependencies between classes can make a system rigid and difficult to maintain. This example shows why thinking about what are dependencies in code is so important at the architectural level.
Imagine two classes in an HR system: Employee and HR.
Java |
In this case, the HR class has a direct dependency on the Employee class. If the Employee class changes—for example, if the getSalary() method is renamed or its return type changes—the HR class will break. This is a simple example of a direct dependency.
A better approach is to depend on abstractions, not concrete implementations. For instance, testing classes should only rely on the public interfaces of the classes they test. This principle limits breakage when internal implementation details change, making the codebase more resilient and maintainable. For scope and technique, see unit vs functional testing and regression vs unit testing.
Conclusion
Dependencies are an integral part of modern software development. They enable us to build powerful applications by standing on the shoulders of giants. However, this power comes with responsibility. A failure to manage dependencies is a failure to manage your project's quality, security, and performance.
By understanding the different types of dependencies, from external libraries to internal modules, you can make more informed architectural decisions. Using the right tools and best practices—like package managers, virtual environments, and SCA scanners—transforms dependency management from a chore into a strategic advantage. It leads to better code, safer deployments, and smoother collaboration. The central question of what are dependencies in code is one every developer must answer to build professional-grade software.
FAQ Section
1) What are examples of dependencies?
Dependencies include software libraries (e.g., Lodash), external modules (npm packages), internal shared utilities, test frameworks (a build dependency), and runtime libraries like database connectors.
2) What do you mean by dependencies?
Dependencies are external or internal pieces of code that your project requires to function correctly. Your code "depends" on them to execute its tasks.
3) What are the dependencies of a programming language?
These include its runtime environment (like an interpreter or compiler), its standard library of built-in functions, and its toolchain, which consists of package managers and build tools.
4) What are dependencies on a computer?
These are system-level libraries or packages an application needs to run. Examples include graphics drivers, system fonts like OpenSSL, or installed runtimes such as the Java Virtual Machine (JVM) or .NET Framework.
Shivam Agarwal

Visual Scripting: Definition, Benefits, and Examples
Imagine building application logic like assembling a flowchart. You connect boxes and arrows on a screen, defining behavior and flow without writing a single line of traditional code. This node-based, drag-and-drop approach is the foundation of a powerful method that is changing how teams build interactive experiences. This brings us to the core question: what is visual scripting?
For developers, tech leads, and engineering teams, understanding this approach is vital. It offers a way to accelerate prototyping, improve collaboration between technical and non-technical staff, and automate workflows. It represents a significant shift in how we can structure and visualize computational logic, making it an essential tool in modern development, from game creation to interactive design.
What Is Visual Scripting?
At its heart, visual scripting is a method of programming that lets you construct application logic using a graphical interface instead of text-based code. Users manipulate graphical elements—called nodes or blocks—and connect them to create a flow of actions and decisions.
Each node represents a specific function, event, variable, or control flow statement. For example, one node might get a character’s position, another might check for user input, and a third could trigger an animation. You connect these nodes with wires or lines, dictating the sequence and logic of operations in a clear, visual manner.

This method provides an abstraction layer over conventional programming. It allows creators to focus on the logic and behavior of their application without getting bogged down by the syntax of a specific programming language. It is a practical answer to what is visual scripting.
How Visual Scripting Works
The mechanics of visual scripting are straightforward and intuitive. The process typically involves a few simple steps. You start by dragging nodes or blocks from a library onto a canvas. Then, you connect these nodes to map out the logical flow of your program.
Nodes: These are the basic building blocks. They can represent anything from a mathematical operation (add, subtract) to a complex action (play sound, move object).
Wires: These are the connectors that establish relationships between nodes. They direct the flow of data and execution from one node to the next.
Graphs: The entire canvas of connected nodes is called a graph. This graph is a visual representation of a script or a piece of your codebase architecture.
Behind the scenes, this visual graph is translated into machine-readable code. This translation layer converts the node-based logic into a language that the underlying engine can execute, such as C++ or C#. This means you are still programming, just through a different interface.
Many popular game engines and development toolchains feature robust visual scripting systems.
Unreal Engine’s Blueprints is a premier example, deeply integrated into the engine and best for game devs building complex interactions visually.
Unity’s Visual Scripting (formerly known as Bolt) offers similar functionality and is best for teams mixing coders and non-coders; it was made a free, standard part of the engine in 2020.

These tools demonstrate how visual systems can coexist with and complement traditional code within a professional tech stack.
Why It Works: The Benefits for Engineering Teams
Understanding the advantages helps clarify the utility of visual scripting. It introduces efficiency and accessibility into the development process. The benefits directly address common production bottlenecks.
Accessible Interface: The graphical approach lowers the barrier to entry. Designers, artists, and other non-programmers can quickly contribute to the project’s logic without needing to learn complex syntax. This makes it a powerful tool for teams with varied technical skills.
Speed & Prototyping: Visual scripting excels at rapid iteration. You can build and test ideas, create proof-of-concepts, and produce functional demos much faster than with traditional coding. This speed is invaluable for validating concepts in early development stages.
Reduced Syntax Errors & Complexity: Because you work with pre-defined nodes, typographical and syntactical mistakes are nearly eliminated. This allows you to concentrate on the logic itself rather than debugging missing semicolons or mismatched brackets. The visual flow simplifies the representation of program logic.
Better Collaboration: This method acts as a common language between developers and non-technical team members. A designer can create a UI flow visually, and a programmer can then inspect the underlying graph or even convert it to code for optimization. This shared workspace improves communication and integration.
Code Scaffold & Boilerplate: Visual tools can scaffold logical structures very quickly. You can generate the basic architecture for a system visually and then transition to text-based code to refine performance-critical parts. This saves time writing repetitive boilerplate code.
Drawbacks and Limitations to Consider
Despite its benefits, visual scripting is not a universal solution. Engineering teams must be aware of its limitations to apply it effectively and avoid creating future technical debt.
Scalability & Maintenance Issues: As logic becomes more complex, visual graphs can turn into a tangled web of nodes and wires, often called a "spaghetti graph." These large, intricate graphs are difficult to debug, refactor, and maintain over the long term. Reading and modifying a massive visual script is often less efficient than working with well-structured text code.
Performance Concerns: Visual scripting often introduces a small performance overhead compared to handwritten code. For most tasks, this difference is negligible. But for performance-critical systems—like core gameplay mechanics or high-frequency data processing—this overhead can become a significant issue.
Refactoring Constraints: Automated refactoring tools for visual scripts are less mature than those for text-based languages. Restructuring or cleaning up a complex visual graph is largely a manual process, which can be time-consuming and prone to error.
Ideal Use Cases Only: It is best seen as an ancillary tool within a larger development toolset. It is perfect for certain tasks, such as UI logic, state machines, or simple event handling. However, it is not the right choice for building the entire backbone of a complex software system.
Visual Scripting: Real-World Developer Perspectives
To ground this discussion in practical experience, consider what developers actively working in the field have to say. Conversations on platforms like Reddit offer candid insights into how teams integrate these tools.
One developer highlights its value for initial builds but points out the need to transition later:
“We use it during the prototyping phase... we generally tend to remove most of the visual scripting during production to allow for more optimization and refactoring options in the long run.”
This sentiment is common. The tool helps teams validate ideas quickly before committing to a production-ready codebase.
Another developer offers a warning on growing complexity:
“Visual scripting becomes a big problem when the scope gets larger – reading through code is much easier than trying to scroll around to see which wire is going where.”
This quote speaks directly to the scalability and maintenance challenges mentioned earlier.
A balanced view treats it as a specialized instrument:
“Visual scripting is the microwave oven of the gamedev toolset... excel in very specific situations and require a fair bit of knowledge on how to actually use them correctly.”
This analogy correctly positions it as one tool among many, not a complete replacement for a traditional kitchen.
Finally, a developer points to its strength in empowering designers to make content adjustments:
“It is faster to implement... your system becomes highly extendable... can be used by the designer.”
This ability for non-programmers to iterate on logic is a significant production benefit. These perspectives help answer the question of what is visual scripting in a practical context.
Examples and Use Cases
The application of visual scripting extends across various domains, with game development being the most prominent. Leading engines provide first-class support for this workflow.
Unity (Visual Scripting): Since Unity acquired Bolt in 2020 and integrated it as a free package, its visual scripting tool has become a core part of the ecosystem. It allows teams to create logic for everything from character controllers to UI management directly within the editor. The question of what is visual scripting is often answered by pointing to Unity's implementation.
Unreal Engine (Blueprints): Blueprints are arguably the most famous visual scripting system. They are deeply integrated into Unreal Engine and are used by indie developers and AAA studios alike. Many full games have been shipped using Blueprints for a substantial portion of their codebase.
Workflow Automation & Interactive Design: The usefulness of node-based logic is not limited to games. It is found in tools for creating interactive installations, automating software tasks, and customizing application behavior. This approach lets users visually configure complex workflows without writing code.
Low-Code Testing: An adjacent field is low-code testing automation. Tools in this area often use drag-and-drop interfaces to build test scripts, allowing quality assurance teams to create and manage automated tests visually. This is another example of what is visual scripting enabling non-programmers.
Tips for Developers and Tech Leads
To integrate visual scripting effectively into your workflow, you should follow a few best practices. This ensures you get the benefits without falling into common pitfalls.

Use it for Prototyping and High-Level Logic: It is ideal for quickly testing game mechanics, setting up state machines, or defining UI flows. Use it when non-coders need to contribute to the logic.
Avoid Over-Reliance: For systems that require high performance or are algorithmically complex, transition to traditional, text-based code. Use the visual script as a scaffold, then rewrite critical parts in C# or C++.
Keep Graphs Small and Modular: Just as you would write short, single-responsibility functions in code, you should create small, focused visual graphs. Use subgraphs to encapsulate and reuse logic, preventing your main graphs from becoming unmanageable.
Tackle Complex Problems with Community Knowledge: When faced with a tricky bug or a complex implementation in either visual scripts or traditional code, it is common to get stuck. Before modern automated tools became prevalent, developers relied heavily on community-driven platforms. Websites like Stack Overflow, engine-specific forums, and official documentation are invaluable resources. Searching for similar problems or posting a well-defined question can provide solutions and insights from experienced peers, helping you overcome hurdles without reinventing the wheel.
Establish Clear Conventions: Your team should agree on standards for naming, layout, and commenting within visual graphs. This discipline is crucial for keeping your visual codebase clean and maintainable. This approach helps in understanding what is visual scripting at a team-wide scale.
Conclusion
Visual scripting is an approachable, visual layer that sits on top of programming logic. It demystifies the process of creating behavior in software, making it accessible to a wider range of creators. Its strengths in rapid prototyping, team collaboration, and design-centered development are clear. For many, this is the complete answer to what is visual scripting.
However, it is not a replacement for text-based coding. According to Gartner, the market for low-code technologies is expanding rapidly, showing its importance. The best results come when it is used judiciously as part of a complete toolset, complementing traditional code rather than supplanting it.
The true value of visual scripting is proven through application, not theory. Challenge your team to build its next prototype using Unity Visual Scripting or Unreal Blueprints. The immediate improvement in development speed and workflow will speak for itself.
FAQ Section
1. What is visual scripting used for?
It is used to generate game logic, UI flows, interactive scenes, and prototypes. It is also applied in automation tools and workflow setups. It is particularly useful when you want to build logic visually or involve non-coders in the development process. This is the practical side of what is visual scripting.
2. Is visual scripting easier than coding?
It is often easier for simple logic because it hides syntax and lets you connect concepts visually. However, for complex or large-scale systems, traditional coding provides more control, clarity, and better tools for maintenance and refactoring.
3. Can you make a game with visual scripting?
Absolutely. Many prototypes and indie projects are built entirely with tools like Unity Visual Scripting or Unreal Blueprints. That said, most complex, commercially released games use a combination of visual scripting and traditional code to achieve their performance and scalability goals.
4. Was Hollow Knight made with visual scripting?
No available evidence suggests that Hollow Knight used a visual scripting system. It was built in Unity using traditional coding techniques. The game is a great example of what can be accomplished with a powerful engine and a well-structured C# codebase.
Figma & No-code
Shivam Agarwal

