Regex Tester
Test regular expressions against text and see all matches and capture groups — nothing is uploaded.
Matches
Test regex patterns online
Enter a regular expression and some test text to see all matches, their positions, and any capture groups — instantly, in your browser. No upload, no sign-up, no server required.
Supports all JavaScript regex flags: g (global), i (case-insensitive), m (multiline), s (dotAll), u (unicode), and d (indices).
FAQ
Which regex flavour is used? JavaScript RegExp — the same engine your browser runs.