Typical use
Input
\d+ against abc123Output
Matches 123 and shows capture results.Regex Tester
Test and debug regular expressions online.
Match Result
Match results will appear here
Replace Result
Replace results will appear here
Use this page to test regular expression matches. It focuses on a regular expression and test text and produces match positions, groups, and replacement output.
How to use
- Prepare a regular expression and test text and paste, upload, or enter it as requested by the page.
- Adjust the available options, then run the process, conversion, generator, or lookup.
- Review match positions, groups, and replacement output, then copy, download, or continue editing the result.
Examples
Privacy
Processed in browser
Input not stored
Review sensitive data
The input is mainly processed in your browser, and the page only uses browser capabilities needed to generate the result.
Frequently asked questions
Use a regular expression and test text as expected by this page. If validation fails, try a smaller sample and check encoding, separators, file type, or expression syntax.
The usual causes are input format issues, browser support, or option settings. Verify the workflow with the sample first, then replace it with your own data.
You can copy ordinary results, but review critical fields and edge cases before production use, official submission, financial calculation, or publication.
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