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Test and debug regular expressions in real-time. Perfect for developers and data analysts.

Regex Pattern

Invalid regular expression. Please check your pattern.
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Common Regex Patterns
Email Validation
\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b
Phone Numbers
\b\d{3}[-.]?\d{3}[-.]?\d{4}\b
URL Matching
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
Password Strength
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$
Regex Flags Explained
  • Global (g): Find all matches rather than stopping after the first match
  • Ignore Case (i): Case-insensitive matching
  • Multiline (m): Treat beginning and end characters (^ and $) as working over multiple lines
  • Dot All (s): Allows . to match newline characters

These flags modify how the regular expression engine interprets your pattern.