Public Tools

Free online developer utilities to help you build better software. Test regex patterns, format JSON, encode data, and more.

Test, debug, and visualize regular expressions with real-time highlighting

Validate, format, minify, and convert JSON with syntax highlighting

Encode and decode text, images, and files to/from Base64 format

Encode and decode URLs with query parameter parsing and validation

Generate MD5, SHA-1, SHA-256, SHA-512 hashes and HMAC signatures

Pick colors and convert between HEX, RGB, HSL, CMYK formats

Reduce image file sizes by 20-80% while maintaining quality

Convert between PNG, JPG, WebP, AVIF formats

All tools are free to use with no registration required.