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Visual Regex Tester
DeveloperTest regular expressions with live highlighted matches. See match groups and use common regex snippets.
ttb run visual-regex-tester
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How to Use Visual Regex Tester
Enter a regex pattern, pick flags, paste test text — matches highlight in cyan. Use quick pattern presets for common use cases.
1
Enter pattern
Type your regex without / delimiters.
2
Set flags
Toggle g, i, m as needed.
3
Test
Matches highlight inline. Check match count below.
Frequently Asked Questions
What engine?+
JavaScript's built-in RegExp — standard in all browsers.
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