Regular expression tester
ReadyRegular expression tester. Test JavaScript regular expressions locally.
How to use
Test JavaScript regular expressions locally. Maximum 100,000 input characters and 1,000 matches; long matches and capture groups are truncated. Expensive patterns are stopped after about one second.
Your files stay on your device
Browser tools keep files on your device. Advanced document tools upload files for temporary server processing; the tool shows this before upload. Web lookups send queries to the server and public lookup services.
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