Regex Tester

Test regular expressions against sample text in real time, with match highlighting, capture groups, and code snippets.

Regular Expression

//g

Flags

Presets

Test String0 chars

Matches0

Enter a pattern and a test string above to see match results.

Replacement

Replacement Result

The replacement result will appear here.

//g

Matching uses the JavaScript RegExp engine, the same one running in your browser.

Turn off the Global flag to test .exec()-style single-match behavior instead of finding every match.

All matching runs locally in your browser; nothing is sent to external servers.