Free Developer Tools

Fast, private, no signup. Just tools that work.

JSON Formatter

Format, validate, and minify JSON data

Base64 Encoder/Decoder

Encode and decode Base64 strings

UUID Generator

Generate random UUIDs (v4)

Hash Generator

Generate MD5, SHA1, SHA256 hashes

Regex Tester

Test regular expressions in real-time

JWT Decoder

Decode and inspect JSON Web Tokens

Unix Timestamp

Convert timestamps to human dates

URL Encoder/Decoder

Encode and decode URL strings

Color Converter

Convert between HEX, RGB, HSL

Markdown Preview

Preview markdown in real-time