Developer Tools
Simple, powerful utilities built for developers
Notes
Quick note-taking app for code snippets and thoughts. Create, edit, and organize your notes with localStorage persistence—no servers required.
Base64 Encoder/Decoder
Encode and decode Base64 strings with ease. Perfect for working with data URIs, API tokens, and encoded content. Swap between modes instantly.
UUID Generator
Generate unique identifiers (UUID v4) instantly. Create single or bulk UUIDs with history tracking stored locally. Perfect for testing and development.
Color Picker
Pick colors and convert between HEX, RGB, and HSL formats. Save your favorite colors with custom names for easy reference and reuse.
RegEx Tester
Test and debug regular expressions in real-time. See matches highlighted, save patterns for later, and understand regex behavior with detailed results.
JSON ⇄ YAML Converter
Convert between JSON and YAML formats instantly. Bidirectional conversion with syntax validation and pretty formatting. Perfect for config files and data transformation.
About These Tools
A collection of lightweight developer tools designed to make daily tasks easier. No bloat, no complexity—just clean, efficient utilities that get the job done.
Each tool is built with a focus on performance and usability, providing instant results without unnecessary features. Everything runs locally in your browser for complete privacy.