DEVELOPER TOOLS
Regex Tester
Enter a regex pattern, flags, and sample text to test matches directly in the browser.
Use with text and writing tools
Enter a pattern and test text to inspect matches.
Matches
- No matches to display.
Your pattern and test text are processed locally in your browser. They are not uploaded by this tool.
How it works
Regex Tester uses the values you enter to produce a clear result directly in your browser. Inputs are designed to be easy to review before you copy, print, or use the result.
Example
Open the tool, enter a realistic sample value, review the output, and adjust the fields until the result matches your workflow.
Frequently Asked Questions
Is this tool free to use?
Yes. You can use this tool in your browser without creating an account.
Do I need to install anything?
No. The tool runs online in a modern web browser.