Free, fast, privacy-first developer tools. 12 essential tools that work entirely in your browser.
| Tool | Description |
|---|---|
| JSON Formatter | Format, validate and beautify JSON |
| Base64 Codec | Encode and decode Base64 strings |
| JWT Decoder | Decode and inspect JSON Web Tokens |
| Regex Tester | Test regular expressions with live matching |
| Color Picker | Convert colors between HEX, RGB, HSL |
| CSS Gradient | Generate beautiful CSS gradients |
| Markdown Preview | Write and preview Markdown in real-time |
| QR Generator | Generate QR codes from any text or URL |
| URL Codec | Encode and decode URLs |
| Hash Generator | Generate MD5, SHA-1, SHA-256, SHA-512 |
| Timestamp | Convert Unix timestamps to dates |
| Lorem Ipsum | Generate placeholder text |
- 🔒 Privacy First — All processing happens in your browser, no data sent to servers
- ⚡ Instant Results — Everything works offline, no waiting
- 📱 Works Everywhere — Responsive design, works on mobile
- 🆓 Always Free — No sign-up, no ads, no tracking
https://tyr1105.github.io/devutils
Built with ❤️ using vanilla HTML, CSS, and JavaScript.