Developer Tools
Format and validate JSON and SQL, minify HTML, CSS and JavaScript, convert between JSON, CSV and XML, test regular expressions and decode JWTs. These are everyday helpers for programmers, and all of them run locally in the browser so your code and data stay private.
JSON Formatter & Validator
Beautify, minify and validate JSON with clear error messages.
SQL Formatter
Turn long, messy SQL queries into clean, readable code.
HTML Minifier
Shrink HTML by removing comments and unnecessary whitespace.
CSS Minifier
Compress CSS stylesheets to make your website load faster.
JavaScript Minifier
Compress JavaScript files safely using the Terser engine.
HTML Entity Encoder & Decoder
Convert special characters to HTML entities and back again.
URL Encoder & Decoder
Percent-encode text for URLs or decode %20-style links back to text.
URL Parser
Split any web address into its parts and list its query parameters.
JSON to CSV Converter
Convert JSON arrays into CSV files that open in Excel or Google Sheets.
CSV to JSON Converter
Turn CSV and spreadsheet data into clean JSON arrays.
JSON to XML Converter
Convert JSON objects and arrays into well-formed, indented XML.
XML to JSON Converter
Parse XML documents, feeds and API responses into readable JSON.
Markdown to HTML Converter
Write Markdown and get clean HTML with a live preview.
Text to HTML Converter
Turn plain text into HTML paragraphs, line breaks, lists and links.
Regex Tester
Test regular expressions live with highlighted matches and groups.
UUID Generator
Generate unique IDs (UUID v4 or v7) one at a time or in bulk.
JWT Decoder
Read the header and payload of a JSON Web Token and check its expiry.