Regex Tester
Test regular expressions with flags, view matches, and highlight results—all in your browser.
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Test regular expressions with flags, view matches, and highlight results—all in your browser.
Chain this with other tools →NewEnhance your workflow by combining these tools together
No matches yet.
Regex matching runs locally in your browser. Use flags g, i, m, s, u, y as needed. Empty patterns will return no matches.
Paste a regex pattern and test text to instantly see matches, flags, and positions. Matches are highlighted inline with a list of occurrences.
Processing happens locally in your browser, making it safe for debugging logs, data, and sensitive strings without uploading anything.
Which flags are supported? g, i, m, s, u, y—`g` is always applied to list all matches.
Why no matches? Empty patterns or zero-length matches are ignored; ensure your pattern consumes characters.