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COD-AI - Free Online Tools

Quick Answer: 55+ free developer tools. Format code, validate JSON, test regex, generate hashes, diff files, and more. No signup required.
:text-6xl font-bold mb-6">Free Developer Tools Online

Free AI-powered coding tools. Format, minify, convert, and analyze code in 20+ programming languages.

COD-AI.com provides a suite of free, fast, and privacy-friendly developer tools. Format code, test regex, convert colors, generate hashes, and more β€” all in your browser.

Lightning Fast
Privacy First
100% Free

Trusted by Users Worldwide

1.5M+
Code Snippets
130K+
Happy Users
44
Free Tools
100%
Free & Secure

πŸ”’ Your files are processed locally and never stored on our servers

πŸ”₯ Popular Tools

JSON FormatterHTML MinifierBase64 EncoderRegex TesterCSS MinifierURL Encoder

All Tools

Why Developers Choose COD-AI

COD-AI.com is a comprehensive collection of free online developer tools designed to streamline your coding workflow. Whether you are a seasoned software engineer, a web developer just starting out, or a student learning to code, our tools help you work faster and more efficiently. Every tool runs entirely in your browser, meaning your code never leaves your machine β€” ensuring complete privacy and security for your sensitive projects.

Our code formatter supports JavaScript, HTML, CSS, and JSON, applying proper indentation and structure to make your code readable. The minifier does the opposite β€” compressing your code for production by stripping whitespace and comments. The regex tester lets you experiment with regular expressions using live highlighting, so you can perfect your patterns before adding them to your codebase. The color converter makes it easy to switch between HEX, RGB, and HSL color formats, which is invaluable when working with design systems and CSS.

For security-related tasks, our hash generator uses the Web Crypto API to generate MD5, SHA-1, and SHA-256 hashes directly in the browser. The URL encoder and decoder handles special characters in URLs, making it easy to work with query strings and API endpoints. The diff checker provides a side-by-side comparison of two text blocks, perfect for reviewing changes before committing code.

AI Code Generator

Describe what to build and get working code. Python, JS, TypeScript.

AI Code Reviewer

Paste code and get instant review with bug detection and best practices.

AI Unit Test Generator

Generate unit tests automatically. Jest, PyTest, JUnit support.

AI API Doc Generator

Generate API documentation from code. OpenAPI/Swagger compatible.

AI Database Designer

Describe your app and get a database schema with ER diagrams and SQL.

3.1 Million+ operations β€” the developer's daily driver

Why Developers Choose COD-AI

⚑ Zero Latency

WASM-powered processing runs at native speed. No server round-trips, no API limits.

πŸ”§ 25+ Languages

JavaScript, Python, Java, C++, Go, Rust, TypeScript, Kotlin, Swift, and more.

πŸ›‘οΈ Fully Offline-Capable

Works without internet. Install as PWA for instant access to all tools.

⌨️ Keyboard-First

Vim keybindings, Ctrl+Enter to execute, Tab to indent. Built for speed.

Who Uses Our Tools?

Professionals

Handle code tasks quickly without expensive software subscriptions.

Students

Free access to professional-grade code tools for academic work.

Small Business

Process code files at scale without per-file costs or enterprise contracts.

Ready to Get Started?

No signup required. Just pick a tool and start working.

All 44 Free Tools

AI Tools (7)
πŸ’»AI Code AssistantπŸ’¬Best ChatGPT for Coding AlternativeπŸ“’CSS Gradient Generator⏰Cron Expression GeneratorπŸ’»Generate Code with AI Free#️⃣Hash GeneratorπŸ†”UUID Generator
Convert (5)
πŸ”„Color ConverterπŸ”„Epoch ConverterπŸ”„HEX Converter🌐Markdown to HTML ConverterπŸ”„Unix Timestamp Converter
Secure (1)
πŸ“Password Generator
Comparisons (3)
πŸ”§Best DevToys AlternativeπŸ”§Best GitHub Copilot AlternativeπŸ”§Best Replit Alternative
Guides (2)
πŸ”§Developer Tools for Coding BeginnersπŸ”§Developer Tools for Frontend Engineers
More Tools (26)
πŸ”§API TesterπŸ”Base64 Encoder/DecoderπŸ“¦CSS MinifierπŸ”§Chmod CalculatorπŸ”Code Diff ViewerπŸ”„Code FormatterπŸ“¦Code MinifierπŸ’»Debug Code Online FreeπŸ”Diff Checker🌐HTML Entity Encoder🌐HTML to Markdown Converter🌐IP Address Lookup{}JSON to Go Struct{}JSON to Python DictπŸ“œJSON to TypeScriptπŸ’»JWT DecoderπŸ“¦JavaScript MinifierπŸ“„Lorem Ipsum GeneratorπŸ“Markdown Preview🎨Online SVG EditorπŸ”§PricingπŸ”€Regex Tester{}SQL to JSON ConverterπŸ—ƒοΈSQL to NoSQL ConverterπŸ’»URL Encoder/DecoderπŸ”§What's New
Guides & More (9)
πŸ“„Base64 Encode Decode OnlineπŸ“„Code Formatter Vs MinifierπŸ“„How To Format JsonπŸ“„How To Generate Typescript TypesπŸ“„IntegrationsπŸ“„Json Formatter OnlineπŸ“„ReviewsπŸ“„SearchπŸ“„Terms

What's New

Mar 2026Major performance improvements across all tools
Mar 2026Added new AI-powered features
Feb 2026Improved mobile experience and accessibility

More Questions?

Is there a file size limit?+
Our browser-based tools can handle files up to 100MB. For optimal performance, we recommend files under 50MB.
Can I use this on mobile?+
Yes! All tools are fully responsive and work on any device with a modern web browser β€” smartphones, tablets, and desktops.
Do you store my files?+
Never. All processing happens locally in your browser. Your Files are processed locally in your browser.

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