Regex Tester — Test Regular Expressions Online

Test regular expressions with real-time matching and highlight. Includes common pattern library.

Regular Expression

/ / gim

Flags

g Global (g) i Case Insensitive (i) m Multiline (m)

Test String

Matches

Enter a regex pattern and test string above...

Common Patterns

Tips

Enable 'Global' flag to find all matches in the test string
Click common patterns to load pre-built regex templates
Capture groups are shown with highlighted colors
All processing happens locally in your browser

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