Developer Tools

Simple, powerful utilities built for developers

JSON Viewer

Format and visualize JSON data with an interactive tree view. Parse, validate, and explore complex JSON structures with collapsible nodes for better readability.

Text Compare

Compare two text blocks side-by-side with real-time diff highlighting. Identify additions, deletions, and changes instantly with character-level precision.

Notes

Quick note-taking app for code snippets and thoughts. Create, edit, and organize your notes with localStorage persistence—no servers required.

MD Viewer

Edit and preview Markdown in real-time with a rich editor. Switch between split view, edit-only, or preview-only modes. Download your markdown files instantly.

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.