Regex Cheatsheet - Regular Expression Quick Reference
Quick reference for regular expression patterns. Character classes, quantifiers, anchors, and common patterns.
Email Address
Common PatternMatch standard email address format
Pattern
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$Syntax
Explanation
Validates username@domain format. Username allows letters, digits, dots, underscores, etc.
Recommended Flags
Examples
user@example.comStandard email
Matches: user@example.com
user.name+tag@mail.co.ukEmail with tag
Matches: user.name+tag@mail.co.uk
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