Set the pattern and flags, put in the text you want to search, and the matches highlight as you type. Press Run and that pattern, its flags and the matches are saved below.

What do the g, i, m, s and u flags do?

g finds every match instead of just the first, i ignores case, m applies ^ and $ to each line, s lets the dot match newlines too, and u turns on Unicode mode. They're exactly the JavaScript regex flags.

Can I see the capture groups?

Yes. Wherever your pattern has brackets ( ), each match shows the captured values as $1, $2 and so on. An empty capture shows as ∅.

Regex Tester (Live Matches & Capture Groups)

Regex Tester

Try a regular expression against some text and watch the matches and capture groups light up as you type.

Text to test2 matches

Preview

Contact: help@toolshere.app, ourmine@ourmine.co.kr for details.

Enter a pattern and press Run —
the results build up here.

Regex Tester

Settings

Frequently asked questions

Regex Tester

Settings

Frequently asked questions

Regex Tester

Settings

Related tools

Frequently asked questions

Regex Tester

Settings

Related tools

Frequently asked questions