DevTools

Free developer tools. No signup. No ads. No tracking.

Data

JSON Formatter

Format, validate & minify JSON

Unix Timestamp Converter

Convert between Unix timestamps and dates

Encoding

Base64 Encode/Decode

Encode and decode Base64 strings

URL Encode/Decode

Percent-encode and decode URLs

Generators

UUID Generator

Generate v4 UUIDs in bulk

Lorem Ipsum Generator

Generate placeholder text

Password Generator

Generate cryptographically secure passwords

Crypto

Hash Generator

MD5, SHA-1, SHA-256, SHA-512

JWT Decoder

Decode and inspect JWT tokens

DevOps

Cron Expression Tester

Build cron schedules and see next run times

Chmod Calculator

Convert between numeric and symbolic permissions

Text

Text Diff

Compare two texts side by side

Regex Tester

Test regular expressions with live matching

Markdown Preview

Write Markdown and see live HTML preview

Design

Color Converter

Convert between HEX, RGB, and HSL