Developer Tools
Format JSON, decode JWTs, test regex, and more — free browser-based utilities built for developers.
JSON Formatter
Format and validate JSON instantly
Base64 Encoder
Encode and decode Base64 strings
URL Encoder
Encode and decode URLs
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes
JWT Decoder
Decode and inspect JWT tokens instantly in your browser for free
Regex Tester
Test and debug regular expressions instantly with live match highlighting
Number Base Converter
Convert numbers between decimal, binary, hex and octal instantly
CSS Gradient Generator
Generate beautiful CSS gradients with live preview and copy the code instantly
Text Diff Checker
Compare two texts and find differences instantly with highlighted diff view
Markdown Preview
Write and preview Markdown in real time instantly in your browser for free