Free Online Regex Tester and Visualizer
Test and debug regular expressions instantly in your browser.
Click Test Regex...
Quick Reference
. any char\d digit\w word char+ 1 or more* 0 or more? 0 or 1FAQ
Yes, completely free with no signup required.
No. Everything runs locally in your browser.
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Frequently Asked Questions
Is Regex Tester free to use?
Yes, Regex Tester is completely free with no signup or registration required. All processing happens directly in your browser.
Is my data safe?
Absolutely. Your data never leaves your device. Everything runs locally in your browser 鈥?no uploads, no servers, no tracking.
Do I need to install anything?
No installation needed. Regex Tester works entirely in your web browser on both desktop and mobile devices.
How do I use
Simply enter or paste your input in the tool above, and the result will be generated instantly. No configuration required.