A collection of 18+ free, fast, and privacy-first online tools for developers. All processing happens in your browser - your data never leaves your device.
🔗 GitHub Repository | 📚 Documentation
- 🔧 18 Developer Tools - JSON formatter, SQL formatter, JWT decoder, regex tester, and more
- 🌙 Dark Mode - Eye-friendly theme that persists across sessions
- ⚡ Lightning Fast - All tools run client-side, instant results
- 🔒 Privacy First - No data collection, everything stays in your browser
- 📱 Mobile Friendly - Responsive design works on any device
- 🆓 100% Free - No sign-up, no limits, no ads (coming soon: non-intrusive ads)
- JSON Formatter - Format, validate, and minify JSON
- SQL Formatter - Format SQL queries with dialect support (MySQL, PostgreSQL, SQLite)
- Password Generator - Cryptographically secure passwords
- UUID Generator - Generate UUIDs in bulk
- QR Code Generator - Create QR codes from text/URLs
- Lorem Ipsum Generator - Placeholder text generator
- Color Palette Generator - Create beautiful color schemes
- Slug Generator - URL-friendly slugs from any text
- Base64 Encoder/Decoder - Convert to/from Base64
- URL Encoder/Decoder - Encode special characters for URLs
- Hash Generator - MD5, SHA-1, SHA-256, SHA-512
- JWT Decoder - Decode JSON Web Tokens
- YAML ↔ JSON Converter - Convert between formats
- Word Counter - Count words, characters, sentences, reading time
- Text Case Converter - UPPERCASE, lowercase, camelCase, snake_case, etc.
- Timestamp Converter - Unix timestamp ↔ human-readable dates
- Regex Tester - Test regular expressions with highlighting
- Diff Checker - Compare two texts and highlight differences
- Framework: Next.js 14 (App Router)
- Language: TypeScript
- Styling: Vanilla CSS (no framework)
- Deployment: Vercel
- Libraries: qrcode, uuid, crypto-js, chroma-js, sql-formatter, js-yaml, diff
# Clone the repository
git clone https://github.com/YOUR_USERNAME/toolforge-hub.git
cd toolforge-hub
# Install dependencies
npm install
# Run development server
npm run dev
# Build for production
npm run buildThis project is part of a passive income portfolio targeting $650-1,100/month revenue through:
- Google AdSense (primary monetization)
- Affiliate marketing (developer tools)
- SEO-optimized content targeting 1M+ monthly searches
Each tool targets specific high-volume keywords:
- JSON Formatter: 60K/mo
- Timestamp Converter: 90K/mo
- SQL Formatter: 50K/mo
- Password Generator: 80K/mo
- And more...
- Add 12 more tools (CSS/JS/HTML minifiers, image tools)
- Implement keyboard shortcuts (Ctrl+K search)
- Add tool favorites and history
- PWA support for offline access
- Blog section for long-tail keywords
MIT License - feel free to use this code for your own projects!
Contributions are welcome! Please feel free to submit a Pull Request.
Questions or suggestions? Open an issue on GitHub.
Built with ❤️ using Next.js and TypeScript