Developer Tools
Fast, privacy-friendly tools that run entirely in your browser. Free, no sign-up, and nothing you type is ever sent to a server.
JSON to Dart Converter
Convert JSON to Dart model classes. Generates fromJson, toJson, copyWith with null safety. Supports Freezed & json_serializable.
QR Code Generator
Generate QR codes for URLs, text, emails, and phone numbers instantly. Download as PNG.
JSON Formatter & Validator
Format, validate, and minify JSON. Real-time error detection with line numbers.
Password Generator
Generate cryptographically secure passwords using the Web Crypto API. Strength indicator included.
Base64 Encoder / Decoder
Encode any text or URL to Base64, or decode Base64 strings — fully client-side.
UUID Generator
Generate RFC-4122 compliant v4 UUIDs in bulk. Copy to clipboard in one click.
JWT Decoder
Decode JSON Web Tokens instantly. Inspect header, payload, and expiry — fully client-side, no signature verification.
Regex Tester
Test regular expressions against sample text with live match highlighting, groups, and flags.
Color Generator
Pick a seed color and preview tints/shades. Copy a ready-to-use Flutter ColorScheme.fromSeed() snippet.
Dart Data Class Generator
Paste JSON and generate an immutable Dart data class with copyWith, toString, and equality — no JSON (de)serialization boilerplate.