Regex Tester

Test and debug regular expressions with real-time matching

Replace With

Use capture groups: $1, $2, etc.

Regular expressions (regex) are patterns used to match character combinations in strings. They are powerful tools for text processing and validation.

Flags Explanation:

g - Global (find all matches)

i - Case insensitive

m - Multiline (^ and $ match line breaks)

s - Dot matches newline

u - Unicode

y - Sticky

Special Characters:

. - Any character

^ - Start of line

$ - End of line

* - 0 or more

+ - 1 or more

? - 0 or 1

\d - Digit

\w - Word character

\s - Whitespace

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