# onDevTools - Free Online Developer Tools
# https://www.ondevtools.com

> onDevTools is a free, privacy-focused platform with 230+ browser-based developer tools. All processing happens locally — no data is sent to servers.

## Popular Tools

- [JSON Formatter](https://www.ondevtools.com/en/json-formatter): Format, validate, and beautify JSON data with syntax highlighting and tree view
- [Password Generator](https://www.ondevtools.com/en/password-generator): Generate secure passwords with customizable length, characters, and strength indicators
- [Base64 Encoder](https://www.ondevtools.com/en/base64-encoder): Encode and decode Base64 strings for data transfer and storage
- [Regex Tester](https://www.ondevtools.com/en/regex-tester): Test and debug regular expressions with live matching and explanation
- [JSON to TypeScript](https://www.ondevtools.com/en/json-to-typescript): Convert JSON data to TypeScript interfaces and types
- [JWT Decoder](https://www.ondevtools.com/en/jwt-decoder): Decode and inspect JWT tokens without sending them to a server
- [XML Formatter](https://www.ondevtools.com/en/xml-formatter): Format and validate XML documents
- [URL Encoder](https://www.ondevtools.com/en/url-encoder): Encode and decode URL components
- [Hash Generator](https://www.ondevtools.com/en/hash-generator): Generate MD5, SHA-1, SHA-256, and other cryptographic hashes
- [Color Picker](https://www.ondevtools.com/en/color-picker): Pick colors and convert between HEX, RGB, HSL formats
- [Timestamp Converter](https://www.ondevtools.com/en/timestamp-converter): Convert between Unix timestamps and human-readable dates
- [QR Code Generator](https://www.ondevtools.com/en/qr-generator): Generate QR codes for URLs, text, and contact information
- [Markdown Previewer](https://www.ondevtools.com/en/markdown-previewer): Preview Markdown with live rendering
- [CSS Gradient Generator](https://www.ondevtools.com/en/gradient-generator): Create CSS gradients with a visual editor
- [Tailwind CSS Converter](https://www.ondevtools.com/en/tailwind-css-converter): Convert between raw CSS and Tailwind CSS classes

## Categories

- Data Tools: JSON, XML, YAML, CSV formatters and converters
- Security Tools: Password generator, hash generator, JWT decoder
- Text Tools: Regex tester, text diff, case converter, word counter
- Code Tools: JS/CSS/HTML minifiers, Tailwind converter, JSON to TypeScript
- Design Tools: Color picker, gradient generator, contrast checker
- Network Tools: DNS lookup, IP address finder, HTTP header checker
- Time Tools: Timestamp converter, timezone converter, cron builder
- Image Tools: Format converter, resizer, cropper, optimizer

## Key Features

- 230+ tools, all free, no registration required
- 100% browser-based — no data sent to servers
- Available in 10 languages: English, Spanish, French, German, Turkish, Russian, Ukrainian, Portuguese, Dutch, Swedish
- Dark and light theme support
- Mobile responsive

## Contact

- Website: https://www.ondevtools.com
- GitHub: https://github.com/ondevtools