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Regex Tester
Test regular expressions and inspect matches and capture groups
Regex Tester
Enter a regular expression and test text to inspect matches, indexes and captured groups in real time.
Regex Settings
Enter the JavaScript regex pattern without wrapping / /.
//gi
Test Text
Enter the text content to match.
Chars: 68Lines: 5Bytes: 68Matches: 2
Match Preview
Matched text is highlighted below.
Match Summary
#1 [12, 34) [email protected]
#2 [35, 52) [email protected]
Match Details
Inspect each match, index range and captured groups.
#1 [12, 34)
22 chars
Matched Text
#2 [35, 52)
17 chars
Matched Text
Tip
- If the g flag is disabled, only the first match is returned.
- Do not include wrapping slashes. Enter \d+ instead of /\d+/.
- Complex regex patterns may be expensive on very large text. Keep test input reasonable.
How to Use
Real-time matching
Enter a pattern and test text to instantly inspect match count, indexes and matched text.
Common flags
Supports g, i, m, s and u flags for most JavaScript regex testing use cases.
Group inspection
Inspect captured groups to debug complex regular expressions more easily.
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