Regex Tester
Test regular expressions with live highlighting
No matches found.
About Regex Tester
Test and debug regular expressions in real-time. See matches highlighted in your test string, with match details including index positions and captured groups.
How to Use
- 1Enter your regex pattern and flags
- 2Type or paste your test string
- 3See matches highlighted in real-time
Frequently Asked Questions
What regex flags are supported?
All standard JavaScript flags: g (global), i (case-insensitive), m (multiline), s (dotAll), u (unicode).
Does it show captured groups?
Yes, named and numbered capture groups are shown for each match.