Regex Tester

Test regular expressions with match highlighting

Test regular expressions with match highlighting

Pattern

Flags

Test text

Privacy: Regex Tester runs completely in your browser. Your input never leaves your device.

Regex Tester FAQ

Is Regex Tester free to use?

Yes, this tool is completely free. There are no fees, subscriptions, or limits — open the page and use it as much as you like.

Does Regex Tester upload my data?

No. Regex Tester runs entirely in your browser on your own device. Your text and numbers never leave your computer.

Does Regex Tester work on mobile?

Yes. The tool is fully responsive and works on Android, iPhone, tablets, laptops, and desktop computers.