18 free tools that run 100% in your browser. No signup. No tracking. No ads (for now).
Your data never leaves your device. All processing happens client-side.
| Category | Tools |
|---|---|
| Data | JSON Formatter, CSV ↔ JSON Converter, JWT Decoder |
| Encoding | Base64 Encoder, URL Encoder, HTML Entity Encoder |
| Code | Regex Tester, SQL Formatter, CSS/JS/HTML Minifier, Diff Checker |
| Generation | UUID Generator, Password Generator, QR Code Generator, Cron Parser |
| Converters | Timestamp Converter, Color Converter, Markdown Preview |
| Reference | HTTP Status Codes |
- 🔒 Private — everything runs locally, your data stays on your device
- ⚡ Fast — zero server round-trips, instant results
- 🎨 Clean — dark theme, no distractions
- 📱 Responsive — works on desktop and mobile
- 🆓 Free — no paywalls, no registration
Pure HTML, CSS, and JavaScript. Zero build steps. Zero frameworks. Hosted on GitHub Pages.