Developer Tools
Format JSON, decode JWTs and Base64, generate UUIDs and hashes, and test regular expressions.
JSON Formatter & Validator
Pretty-print, minify and validate JSON with exact error locations, sorted keys and custom indentation.
Base64 Encode & Decode
Encode text or files to Base64 and decode Base64 back to text or a file. UTF-8 safe, with URL-safe mode.
JWT Decoder
Decode JSON Web Tokens to read the header and payload, check expiry, and verify HMAC signatures.
UUID Generator
Generate random v4 or time-ordered v7 UUIDs in bulk, and inspect any UUID's version and timestamp.
Hash Generator
Calculate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes and HMACs of text or files, and compare checksums.
Color Converter
Convert colors between HEX, RGB, HSL, HWB, CMYK and OKLCH, with a picker and WCAG contrast check.
Regex Tester
Test JavaScript regular expressions with live match highlighting, capture groups and replace preview.