Regex tester
Test regular expressions live with highlighted matches, groups and a plain-English explanation.
Type a pattern to see its matches.
Matching runs on your device, in the background.
- 1Type a pattern and pick flags.
- 2Paste test text. Matches are highlighted.
- 3Try a replacement, then copy the pattern.
- Does my data leave my device?
- No. Everything you paste or open is processed in your browser and stays on your device.
- Does it work offline?
- Yes. Once this page has loaded, it keeps working without an internet connection.
- Is there a size limit?
- No limits from us. Very large inputs can be slow because the work uses your device's memory.
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