Developer Tools
Everyday utilities for working with code and data: format and validate JSON, generate UUIDs and strong passwords, encode or decode Base64/URLs, decode a JWT to inspect its payload, generate MD5/SHA hashes, and test a regular expression against real input. Each one runs client-side, so pasted data and secrets never leave your browser.
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JSON Formatter
Pretty-print & minify JSON
JSON Validator
Catch syntax errors fast
UUID Generator
v4 UUIDs, one click
Password Generator
Strong, random passwords
Base64 Encoder/Decoder
Encode or decode instantly
URL Encoder/Decoder
Percent-encode any string
URL Parser
Split a URL into host, path, params & hash
JWT Decoder
Inspect a JWT's header & payload
JWT Encoder / Generator
Build & sign a JWT with HS256/384/512
Hash Generator
MD5, SHA-1, SHA-256 & SHA-512 at once
MD5 Generator
MD5 hash from text or a file
SHA-256 Generator
SHA-256 hash from text or a file
SHA-512 Generator
SHA-512 hash from text or a file
Unix Timestamp Converter
Timestamp ↔ date, both ways
Unix Timestamp Generator
Live current Unix timestamp
IP Address to Integer Converter
IPv4 ↔ 32-bit integer, both ways
Regex Tester
Live matches, groups & highlighting
Color Converter
HEX, RGB & HSL, both ways
HEX to RGB Converter
HEX code to RGB & RGBA
RGB to HEX Converter
RGB or RGBA to HEX
MIME Type Lookup
Extension ↔ MIME type
HTTP Status Code Checker
Look up what any status code means