Regular Expression Tester
Write standard JS RegEx patterns and instantly see visual highlights indicating matches in your test string.
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Test String
Match Results
No matches found.
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What is a RegEx Tester?
Regular Expressions (RegEx) are sequences of characters that define a very specific search pattern. They are heavily utilized in coding for string validations (like confirming an email address structure) and data scraping.
Flags Reference
- g (Global): Don't return after the first match, locate all matches.
- i (Case Insensitive): Match regardless of case (A matches a).
- m (Multi-line): Anchors ^ and $ match start/end of line instead of entire string.