What regex flavors are supported?

Our tool uses JavaScript regular expression syntax, which is similar to Perl-compatible regex (PCRE).

What flags are available?

Common flags: g (global), i (case-insensitive), m (multiline), s (dotall), u (unicode), y (sticky).

Are there quick pattern examples?

Yes, click the quick pattern buttons (Email, URL, Phone, IP Address, Date) to test common regex patterns.

Does it show match positions?

Yes, each match shows its position (index) in the test string for debugging.

What if the regex is invalid?

The tool shows an error message explaining the regex syntax error to help you fix it.

Can I copy individual matches?

Yes, each match result has a copy button to copy that specific match.

RegEx Visualizer

Test and visualize regular expressions with match highlighting

Regular Expression

Test String