Free Developer Tools Online
COD-AI.com provides a suite of free, fast, and privacy-friendly developer tools. Format code, test regex, convert colors, generate hashes, and more — all in your browser.
All Tools
Code Formatter
Format and beautify JavaScript, HTML, CSS, and JSON code with proper indentation.
Code Minifier
Minify JavaScript, CSS, and HTML by removing whitespace and comments.
Regex Tester
Test regular expression patterns with live highlighting and match results.
Color Converter
Convert colors between HEX, RGB, and HSL formats instantly.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes using the Web Crypto API.
URL Encoder/Decoder
Encode and decode URLs using encodeURIComponent and decodeURIComponent.
Diff Checker
Compare two text blocks side by side with line-by-line difference highlighting.
AI Code Assistant
AI-powered code generation and assistance. Coming soon!
Why Use COD-AI.com Developer Tools?
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 — 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 — 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.