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Test regex patterns with match highlighting, group capture, and replacement.
Test regular expressions with real-time match highlighting, group capture, and replacement.
Regex (regular expressions) is a sequence of characters that defines a search pattern. It is used in programming for text searching, validation, and manipulation. For example, the pattern \d+ matches one or more digits.
Our tester supports the standard JavaScript regex flags: g (global), i (case-insensitive), m (multiline), s (dotAll), and u (unicode).
Yes, our regex tester includes a replacement feature where you can enter a replacement string and see the result of applying your regex pattern with the replacement. It supports capture group references like $1, $2, etc.
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