Developer Tools
Handy utilities for developers and designers that run entirely in your browser. Pick colors, format JSON, generate hashes, decode JWTs, test regex, convert timestamps, and more — without sending anything to a server.
Color Picker
Pick colors and convert between HEX, RGB, HSL, OKLCH
Base64 Image
Encode images to base64 or decode base64 to images
QR Code Generator
Generate QR codes from text or URLs with custom styling
JSON Formatter
Validate, format, and minify JSON data
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes
JWT Decoder
Decode and inspect JWT tokens with expiration status
Regex Tester
Test regular expressions with match highlighting
Timestamp Converter
Convert between Unix timestamps and human-readable dates
UUID Generator
Generate and validate UUID v4 and v7 identifiers
URL Encoder / Decoder
Encode, decode, and parse URL components
Text Diff
Compare two blocks of text with line-level highlighting
Markdown Preview
Live Markdown editor with GitHub Flavored Markdown support
Quick Links
Jump straight to a tool.