Regex Tester

Test and debug regular expressions with live matching and highlighting. See captured groups, match indices, and toggle flags in real time. All processing happens in your browser.

Regular Expression

/ /

Test String

Highlighted Matches matches

Match Details

How it works

1. Write

Enter your regular expression pattern and toggle flags like global, case insensitive, and multiline.

2. Test

Enter test text and see matches highlighted live. View captured groups and match positions.

3. Copy

Copy the regex pattern with flags and use it in your code. Uses JavaScript regex syntax.

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