A collection of developer utilities — pick a tool to get started.
6 tools available
Write Markdown with a live side-by-side preview. Supports toolbar shortcuts, open/save files, and auto-saves to localStorage.
Format, minify, validate, sort keys, and repair JSON. Syntax-highlighted output with copy support.
Convert JSON to Dart model classes for Flutter. Generates fromJson, toJson, copyWith, and Equatable support.
Test and debug regular expressions with live match highlighting, capture group details, and a replace mode.
Send HTTP requests with custom headers, query params, and body. Inspect response status, headers, and JSON output.
Decode JWT tokens to inspect header and payload, verify HMAC signatures, and encode new tokens.