Test JavaScript regular expressions with live match highlighting and a token-by-token breakdown in plain English. Nothing leaves your browser.
\bWord boundary[A-Za-z0-9._%+-]Character set — match any one char inside+One or more of previous@Literal "@"[A-Za-z0-9.-]Character set — match any one char inside+One or more of previous\.Literal dot[A-Za-z]Character set — match any one char inside{2,}2 or more times\bWord boundaryA one-page PDF with the patterns you'll actually reuse — emails, URLs, dates, log parsing.
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