Developer Tools
Format JSON, encode Base64, minify front-end code and convert colors with accessible contrast checks.
4 tools · all free · all local
JSON Formatter & Validator
Validate, pretty-print and minify JSON with line and column error locations.
Base64 Encoder & Decoder
Encode and decode Base64 with full UTF-8 and Unicode support.
HTML, CSS & JS Minifier
Parser-based minification for HTML, CSS and JavaScript with size savings.
Color Picker & Converter
Pick colors, convert HEX, RGB and HSL, and check WCAG contrast.