Developer
12 free tools
A toolbox for everyday development tasks — format and validate JSON, encode and decode Base64 or URLs, decode JWTs, generate UUIDs and hashes, test regular expressions, and convert Unix timestamps. Everything runs client-side, so you can paste in real data without it ever leaving your machine.
- JSON Formatter Beautify, validate & minify JSON.
- Base64 Encoder / Decoder Encode & decode Base64.
- JWT Decoder Decode a JWT’s header & payload.
- UUID Generator Random v4 UUIDs, instantly.
- Unix Timestamp Converter Epoch ↔ human-readable date.
- HEX to RGB Converter Convert HEX ↔ RGB ↔ HSL.
- URL Encoder / Decoder Percent-encode & decode URLs.
- Lorem Ipsum Generator Placeholder text for mockups.
- Regex Tester Test regex with live highlighting.
- CSV to JSON Converter CSV ↔ JSON, right in your browser.
- Number Base Converter Binary, octal, decimal, and hex at once.
- Hash Generator (SHA) SHA hashes generated in your browser.