Regex Tester
Test regular expressions against sample text.
We're putting the finishing touches on this tool.
It's coming very soon — check back shortly.
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
How to regex tester
- 1
Open the Regex Tester tool and paste or drop your content into the input area.
- 2
Adjust the available options to match exactly what you need.
- 3
Run the tool — regex tester completes instantly in your browser.
- 4
Preview the result, then copy it or download the output file.
Frequently asked questions
Is the Regex Tester tool free to use?+
Yes. Regex Tester is completely free with no watermarks, no sign-up requirement, and no file-size paywall. Create a free account only if you want your history and favorites saved.
Is my data safe with the Regex Tester tool?+
Absolutely. Regex Tester runs entirely in your browser — your files and text never leave your device and nothing is uploaded to our servers.
Do I need to install anything to regex tester?+
No installation needed. Regex Tester works in any modern browser on Windows, macOS, Linux, Android and iOS, and can be installed as a lightweight web app (PWA).
What developer tools formats does it support?+
Test regular expressions against sample text.