Developer Tools
Streamline your development workflow with our collection of free developer tools. These utilities help you format code, encode data, test regular expressions, and work with common developer formats—all without leaving your browser or installing extensions. Our JSON formatter beautifies and validates JSON with syntax highlighting, making it easier to read and debug JSON data. The JSON minifier removes whitespace to reduce file sizes. Base64 and URL encoders/decoders handle data encoding tasks common in web development and API integration. The JWT decoder parses JSON Web Tokens to view header and payload information—essential for debugging authentication tokens. UUID generators create version 4 UUIDs for unique identifiers in your applications. The regex tester provides real-time pattern matching and highlighting to help you perfect your regular expressions. All developer tools process data entirely in your browser using JavaScript, ensuring your code and data never leave your device. This is especially important for sensitive API keys, tokens, or proprietary code. Many tools work offline after the initial page load, making them useful even without an internet connection. These tools are designed for software developers, DevOps engineers, API integrators, and anyone who works with code regularly. Everything is free, requires no signup, and works instantly without any software installation.
Available Tools
JSON Formatter
Format and validate JSON instantly. Better than VS Code extensions—no install, works anywhere. Syntax highlighting included.
JSON Minifier
Minify JSON by removing whitespace and formatting.
JWT Decoder
Decode JWT tokens to view header and payload (no verification).
Base64 Encode/Decode
Encode and decode Base64 instantly. No terminal commands. Works for text, images, data. Free developer tool.
URL Encode/Decode
Encode and decode URL strings with percent encoding.
UUID Generator
Generate UUIDs (v4) for your applications.
Regex Tester
Test regular expressions with real-time matching and highlighting.
Frequently Asked Questions
Do developer tools send my code or data to a server?
No, all developer tools process your data entirely in your browser using client-side JavaScript. Your code, tokens, and data never leave your device, ensuring complete privacy and security.
Do these tools work offline?
Yes, once the page loads, most tools work entirely offline. This is useful when you need to format JSON or encode data without an internet connection.
Are these tools suitable for production use?
These tools are designed for development, testing, and debugging purposes. While they use standard algorithms and libraries, always verify results for critical applications and never process sensitive production data in browser-based tools.