Regex Tester

Test regular expressions with live match highlighting.

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rule Regular expression
/ /
edit_note Test string
list Matches 0 matches

history Recent patterns

About this tool

Test regular expressions with live match highlighting This free Web & SEO tool from Bhuvanesh C runs entirely in your browser — your data stays on your device.

FAQ

Common questions about the Regex Tester.

Toggle global (g), ignore case (i), multiline (m), and dotall (s). The flags field updates live and invalid combinations show a syntax error.
Yes. Each match lists the full match, index, length, and numbered capture groups so you can debug patterns before using them in code.
Common patterns for email, URL, Indian phone numbers, IPv4, and dates are available in the preset dropdown to use as starting points.
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