Free Developer Tools

100% free. No ads. No signup. Everything runs in your browser.

Regex Tester JSON Formatter UUID Generator Base64 CSV to JSON QR Code Color Converter

Regex Tester Free

Enter a pattern to see matches...

JSON Formatter & Validator Free

Click Format to prettify JSON...

UUID Generator Free

Click a button to generate UUIDs...

Base64 Encoder / Decoder Free

Click Encode or Decode...

CSV to JSON Converter Free

Click Convert to see JSON...

QR Code Generator Free

Enter text and click Generate...

Color Converter Free

Was this useful?

These tools are 100% free. If they save you time, consider sending a tip.

ETH: 0x960b9fe28490153eb0cb50ee9c91e7a9a3977dad

SOL: Dfm3P1Sm6Q5GJPSBVnBQWUeNqZPLoGZXNgqfRdyqVPVF

Want 50+ Python scripts that do all this and more?

Get the complete PyToolkit with file management, data processing, PDF tools, web scraping, and image automation — all from your terminal.

Get the Full Toolkit — $5

Lifetime access · Free updates · Commercial use