Offline-first developer utilities for macOS, Windows, and Linux. No cloud dependencies, no data collection.
- JSON Viewer - Format, validate, and minify JSON with syntax highlighting
- Code Playground - Multi-language editor (JS, HTML, CSS, JSON, Markdown)
- Regex Generator - Interactive regex construction with live testing
- JSON to TypeScript - Generate TypeScript interfaces from JSON
- Hash Generator - MD5, SHA-1, SHA-256, SHA-512
- UUID Generator - Generate v1/v4/v6/v7 UUIDs and ULIDs with batch support
- Password Generator - Generate secure passwords and passphrases with strength analysis
- Lorem Ipsum - Generate placeholder text
- QR Generator - Generate QR codes with custom size and error correction
- Bcrypt Generator - Generate bcrypt hashes locally
- Base64 - Encode/decode text and files
- Case Converter - Transform between camelCase, snake_case, kebab-case, and more
- Number Base - Convert between decimal, binary, octal, hex
- Markdown - Live preview and export markdown content
- URL Encoder - Encode/decode URLs and URI components
- CSV to JSON - Bidirectional CSV and JSON conversion with custom delimiters
- Timestamp - Unix timestamp conversion with multiple formats
- Date Difference - Calculate the difference between two dates
- Cron Calculator - Build cron expressions with plain English descriptions
- Color Palette - Create monochromatic, analogous, complementary schemes
- Image Converter & Compressor - Convert a single image or batch-compress JPG, PNG, and WebP files locally
- Text Compare - Diff viewer with line-by-line comparison
- JWT Decoder - Decode and inspect JWT tokens
- API Formatter - Format REST and GraphQL responses with tree view and search
- Unit Converter - Convert length, weight, temperature, and currency units
Get the latest release for your platform:
- macOS (Intel)
- macOS (Apple Silicon)
- Windows
- Linux — .deb (Debian, Ubuntu, Mint) (x64)
- Linux — .deb (Debian, Ubuntu, Mint) (arm64)
- Linux — .rpm (Fedora, RHEL, openSUSE) (x64)
- Linux — .rpm (Fedora, RHEL, openSUSE) (arm64)
- Linux — .AppImage (x64)
- Linux — .AppImage (arm64)
# Clone and install
git clone https://github.com/me-shaon/devtools.git
cd devtools
npm install
# Run locally (development mode)
npm run dev
# Build for distribution
npm run dist- Node.js 18+
- npm or yarn
src/
├── components/
│ └── tools/ # Tool implementations (25 React components)
├── app/
│ └── DevToolsApp.tsx # Main app with sidebar navigation
└── main.tsx # React entry point
src-electron/
├── main.ts # Electron main process
└── preload.ts # Secure IPC bridge
- Electron 40+ for desktop runtime
- React 18+ with TypeScript
- Vite for fast builds and hot reload
- Tailwind CSS for styling
- shadcn/ui for UI components
- No analytics or telemetry
npm run dev # Starts Vite dev server + Electronnpm run dev # Development mode with hot reload
npm run build # Build React app + Electron
npm run test # Run the test suite
npm run lint # Run ESLint
npm run dist # Create installers for all platforms
npm run dist:mac # Build macOS packages
npm run dist:win # Build Windows packages
npm run dist:linux # Build Linux packages
npm run dist:publish # Build and publish to GitHub releases- Create component in
src/components/tools/YourTool.tsx - Add tool definition to
ALL_TOOLSarray insrc/app/DevToolsApp.tsx - Register the lazy-loaded component in
TOOL_COMPONENTSinsrc/app/DevToolsApp.tsx - Add tests if the new tool has non-trivial behavior
- That's it! The tool will appear in the sidebar automatically
We welcome contributions! This project is continuously being improved by user feedback and contributions.
Pull requests welcome. For major changes, open an issue first to discuss the proposed changes.
git clone https://github.com/me-shaon/devtools.git
cd devtools
npm install
npm run dev # Run in development modeMIT