Developer
JSON formatter, hash generator, and dev tools
JSON Formatter & Validator
Format, minify, and validate JSON data online. Pretty-print with 2-space indentation, compress to single line, or check for syntax errors with position info.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings back to text online. Handles UTF-8 characters properly using TextEncoder and TextDecoder for accurate output.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes from any text instantly. Compare hash outputs side by side with one-click copy for checksums and data integrity checks.
Color Picker & Converter
Pick any color and convert between HEX, RGB, and HSL formats instantly. Includes a visual color preview swatch and one-click copy buttons for each format.
Regex Tester
Test regular expressions against text with real-time match highlighting. View match count, captured groups, and toggle global, case-insensitive, or multiline.
URL Encoder / Decoder
Encode or decode URLs and query parameters online. Converts special characters to percent-encoded format using encodeURIComponent and decodeURIComponent.
JWT Decoder
Decode JSON Web Tokens to inspect header and payload claims. View expiration status, issued-at time, and all token claims as formatted JSON in the browser.
UUID Generator
Generate random UUID v4 identifiers using crypto.randomUUID. Create up to 50 UUIDs at once with one-click copy for individual values or the entire batch.