Regex tester
Try a pattern with flags and inspect matches. Honest limits apply.
Local · no upload · ReDoS risk on your tabPattern & input
Allowed: d g i m s u v y. Use g to list every match.
Matches
Limits & ReDoS
- Pattern ≤ 2,000 chars; input ≤ 100,000 chars; at most 200 matches listed.
- Uses the engine RegExp — no separate sandbox. Pathological patterns can freeze this tab (ReDoS).
- Local only — pattern and text are not uploaded.