Developer Tools

JSON Formatter

Pretty-print JSON with 2-space, 4-space, or tab indentation

JSON Validator

Check whether JSON is valid, with the exact error location

JSON Minifier

Strip whitespace from JSON and see the size reduction

JSON to CSV

Convert a JSON array of objects into a CSV table

JSON Compare

Structurally diff two JSON values — key order doesn't count as a difference

Base64 Encoder

Encode text to Base64, with correct Unicode handling

Base64 Decoder

Decode Base64 back to text, with correct Unicode handling

URL Encoder

Percent-encode text for safe use in a URL

URL Decoder

Decode a percent-encoded URL or string back to plain text

UUID Generator

Generate cryptographically random UUID v4 identifiers

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates

JWT Decoder

Decode a JWT's header and payload locally — signature not verified

Hash Generator

Generate SHA-256, SHA-384, SHA-512, or SHA-1 hashes

Color Converter

Convert between HEX, RGB, HSL, and HSV

Regex Tester

Test a regular expression against sample text with live match highlighting

Markdown ⇄ HTML Converter

Convert between Markdown and HTML, either direction, with a live preview