Dev Tools

Free developer tools - JSON formatter, regex tester, and more. No sign-up needed.

4 tools available

JSON Formatter

Beautify, minify and validate JSON. Catches Unexpected token, trailing comma, invalid characters and other RFC 8259 errors with line + column.

dev

URL Shortener & UTM Builder

Shorten URLs, encode/decode URLs, and build UTM tracking links. QR code included.

url shortener

Base64 Encoder/Decoder

Encode and decode text, files, images to and from Base64. Auto-detect mode.

base64 encoder

Color Picker & Palette

Pick colors in HEX, RGB, HSL. Generate palettes. Contrast checker for accessibility.

color picker