ArcanaTools

Regex Tester

Test and debug regular expressions with real-time match highlighting.

Regular Expression
Enter your regex pattern and test string
//g
Test String
Enter text to test against your pattern
Results
0 matches found
Highlighted matches will appear here

Regex Quick Reference

Character Classes

  • . - Any character except newline
  • \d - Digit (0-9)
  • \w - Word character (a-z, A-Z, 0-9, _)
  • \s - Whitespace
  • [abc] - Any of a, b, or c
  • [^abc] - Not a, b, or c

Quantifiers

  • * - 0 or more
  • + - 1 or more
  • ? - 0 or 1
  • {n} - Exactly n
  • {n,} - n or more
  • {n,m} - Between n and m

Anchors

  • ^ - Start of string
  • $ - End of string
  • \b - Word boundary

Groups

  • (abc) - Capture group
  • (?:abc) - Non-capture group
  • a|b - Alternation (a or b)

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