RegEx Testing

Test and debug regular expressions with instant feedback

Regular Expression Pattern

Flags

g (global) i (case insensitive) m (multiline) s (dotall)

Test String

Matches Found: 0

What is Regular Expression Testing?

Regular expressions (regex) are patterns used to match character combinations in strings. This tool helps you test and debug regex patterns before using them in your code.

How to Use

Enter your regular expression pattern
Select flags (g, i, m, s) as needed
Enter text to test against the pattern
View matches and highlighted results