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Regex Tester.
Live JavaScript regex tester with flags, capture groups, named groups, and a match list.
Client-sideNo uploadLive match
Test text
Matches
Highlighted
FAQ
Is the regex sandboxed?
Yes. Patterns are evaluated with new RegExp() inside the JavaScript runtime — no eval, no remote execution.
What flags are supported?
g, i, m, s, u, y. Toggle them below the pattern field.