Regex Tester

Test and debug regular expressions live

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//g

Test string

Matches (2)

Reach me at jane@example.com or john@test.io.

Replace with (supports $1, $<name>)

Common patterns

Test regular expressions against your text with live match highlighting, flag toggles, capture and named groups, and a replace preview. Includes a cheatsheet and a library of common patterns. Runs entirely in your browser.