Developer Tools
Free developer tools to format, validate, encode and debug the data you work with. They run in your browser, so code and tokens stay private.
Base64 Encoder / Decoder
Encode text to Base64 or decode it back, with full Unicode support.
Open toolRegex Tester
Test regular expressions against sample text with live match highlighting.
Open toolURL Encoder / Decoder
Percent-encode or decode URLs and query string components.
Open toolJWT Decoder
Inspect the header, payload and expiry of any JSON Web Token.
Open toolMarkdown Preview
Write Markdown on the left and see rendered HTML update live on the right.
Open toolHTML Formatter
Indent and tidy messy HTML, or minify it for production.
Open toolSQL Formatter
Format SQL queries with consistent keyword casing and indentation.
Open toolCSS Minifier
Strip comments and whitespace from CSS and report the bytes saved.
Open toolJavaScript Minifier
Reduce JavaScript file size by removing comments and dead whitespace.
Open toolCron Expression Builder
Build and read cron schedules with a plain-English explanation.
Open toolJSON to CSV
Convert a JSON array of objects into clean CSV, flattening nested fields.
Open toolHTML to Markdown Converter
Convert HTML to clean Markdown, or Markdown back to HTML, instantly.
Open toolHTTP Status Codes
Searchable reference for every HTTP status code and what it means.
Open toolYAML to JSON Converter
Convert YAML to JSON and JSON back to YAML, right in your browser.
Open toolBinary Code Translator
Translate text to binary and back, with UTF-8, decimal and hex output.
Open tool