Developer utility
JSON Formatter
Use the free JSON formatter to beautify, validate, and format JSON online.
All tools
Developer Tools
Free developer tools for formatting, encoding, testing, and quick front-end or back-end utility work.
Use browser-based developer tools for JSON formatting, Base64 encoding, UUID generation, URL encoding, color picking, and regex testing.
Developer Tools
Popular Developer Tools
Browse the tools in this section and move between related utilities through internal links.
Encoding utility
Base64 Encoder / Decoder
Use the free Base64 encoder and decoder to encode or decode text online.
Identifier utility
UUID Generator
Use the free UUID generator to create random UUIDs online for apps, APIs, and testing.
Web utility
URL Encoder / Decoder
Use the free URL encoder and decoder to encode or decode URLs and query strings online.
Design utility
Color Picker Tool
Use the free color picker tool to select colors and copy HEX, RGB, and HSL values online.
Testing utility
Regex Tester
Use the free regex tester to test regular expressions and inspect matches online.