Regex tester
Test a regular expression against text with live matches.
How to use it
- Add your file or enter your values.
- Adjust the options if needed.
- Run it: the result appears at once and stays on your device.
FAQ
What is Regex tester for?
Test a regular expression against text with live matches.
How do I use Regex tester?
1. Add your file or enter your values. 2. Adjust the options if needed. 3. Run it: the result appears at once and stays on your device.
Is my data sent anywhere?
No, the calculation runs entirely in your browser.
Is Regex tester free and unlimited?
Yes, no signup, no usage limit.
Which browsers are supported?
All modern browsers, on desktop and mobile.
Does Regex tester work offline?
After a first visit, most tools keep working without a connection.