Regex Tester
Test regular expressions against a string.
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How it works
- Enter a regex pattern and optional flags.
- Paste a test string.
- Review matches and capture groups.
Features
- Pattern and flag inputs
- Match list with indices
- Runs entirely in your browser
FAQ
Which regex flavor is used?
JavaScript’s RegExp engine in your browser.
Is my text uploaded?
No. Matching runs locally.
Do I need the global flag?
Use g to find all matches. Without g, only the first match is returned.