Regex Tester
Test regular expressions with instant match highlighting and flag controls, right in your browser.
Flags
Matches
0Waiting for input...
Tips
- Use flags: g (global), i (case-insensitive), m (multiline), s (dot matches newline), u (unicode).
- Matches are highlighted; capture groups are listed below the preview.
- All processing happens locally in your browser; no data is sent to a server.