Free, fast developer tools that run entirely in your browser. No tracking, no sign-up, no nonsense.
Pretty-print, minify, and validate JSON. Instant error highlighting with line numbers.
Convert text or files to and from Base64. Supports drag-and-drop file encoding.
Test regular expressions with live highlighting, match details, and a common patterns library.
Encode and decode URLs, parse query strings into key-value pairs, and build URLs.
Generate v4 UUIDs instantly. Bulk generation, custom formatting, one-click copy.