Free Developer Tools
Free developer tools: format JSON, decode JWTs, test regex, hash text, convert CSV/JSON and encode data — all client-side and private.
UUID Generator
Generate random UUID (v4) identifiers.
JSON Formatter
Format, beautify & validate JSON.
Base64 Encode / Decode
Encode or decode Base64 text.
Color Converter
Pick a color, get HEX, RGB & HSL.
Hash Generator
Generate SHA-256 / SHA-1 hashes.
Unix Timestamp Converter
Convert Unix time to a date & back.
CSV ↔ JSON Converter
Convert between CSV and JSON.
JWT Decoder
Decode a JWT header & payload.
Regex Tester
Test regular expressions live.
Text Diff Checker
Compare two texts line by line.
URL & HTML Encoder
Encode/decode URL & HTML entities.
Text to Binary
Convert text ↔ binary.
Color Palette Generator
Generate color schemes.
JSON ↔ YAML Converter
Convert JSON and YAML.