Developer Tools
A complete developer toolkit: JSON, SQL, HTML, CSS, JavaScript, XML and YAML formatters and validators, plus encoders, JWT decoding, regex testing and timestamp conversion. All processing happens client-side.
JSON Formatter
Beautify or minify JSON, with errors pinned to the line
JSON Validator
Check JSON syntax and see the shape of your data
JSON Compare
Structural diff — ignores formatting and key order
UUID Generator
Bulk v4 and v7 UUIDs from your browser's crypto API
Base64 Encode / Decode
Full Unicode support, including URL-safe Base64
URL Encode / Decode
Percent-encoding, with the component distinction made explicit
JWT Decoder
Inspect header, payload and expiry — no secret required or accepted
Regex Tester
Live matches, highlighted in context, with capture groups
SQL Formatter
Break long queries onto readable clause lines
HTML Formatter
Indent markup by nesting depth, preserving pre and textarea
CSS Formatter
Beautify or minify stylesheets, including nested at-rules
JavaScript Formatter
Structural indentation that respects strings and comments
YAML Validator
Catches tabs, duplicate keys and colon spacing, with line numbers
XML Formatter
Validate well-formedness, then indent by depth
Unix Timestamp Converter
Epoch to date and back, with the unit detected for you