Developer Tools - free online tools

Small utilities that save a trip to the terminal. Format and validate JSON, encode and decode Base64 or URLs, test regular expressions, and generate secure random values. Everything runs locally in your browser.

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to readable text.

Color Converter

Convert colors between HEX, RGB and HSL.

JSON Formatter and Validator

Format, minify and validate JSON with clear error messages.

Password Generator

Create strong random passwords with the length and characters you choose.

Regex Tester

Test a JavaScript regular expression against your text and see every match.

Unix Timestamp Converter

Convert Unix timestamps to dates and dates to timestamps.

URL Encoder / Decoder

Encode text for safe use in a URL or decode percent-encoded text.

UUID Generator

Generate random version 4 UUIDs, one or many at a time.