Developer Tools
Essential utilities for developers. Format, decode, encode, and test directly in your browser.
6 tools available
JSON Formatter
Format, minify, and validate JSON online for free. Pretty print with custom indentation. No upload needed - all processing in your browser.
Try this toolJWT Decoder
Decode and inspect JSON Web Tokens (JWT) online for free. View header, payload, and expiry. No upload needed - all processing in your browser.
Try this toolBase64 Encoder / Decoder
Encode and decode Base64 strings online for free. Supports Unicode text. No upload needed - all processing in your browser.
Try this toolRegex Tester
Test regular expressions online for free. Real-time matching with highlighting. Supports JavaScript regex syntax. No upload needed.
Try this toolJSON Validator
Validate JSON syntax online for free. Find and fix JSON errors instantly. Detailed error messages with line numbers. No upload to server.
Try this toolBase64 Decoder
Decode Base64 strings to text online for free. Instant decoding, no upload to server. Also encode text to Base64. Supports UTF-8.
Try this tool