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Regex Tester

Test your regular expressions in real-time with syntax highlighting and a cheatsheet.

Regular Expression

Test String

Results

No matches found.

Try adjusting your regex pattern or test string.

Regex Cheatsheet

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

`*`	0 or more
`+`	1 or more
`?`	0 or 1
`{3}`	Exactly 3
`{3,}`	3 or more
`{3,5}`	Between 3 and 5

`^`	Start of string / line
`$`	End of string / line
`\b`	Word boundary

`(abc)`	Capture group
`(?:abc)`	Non-capturing group
`(?=abc)`	Positive lookahead
`(?!abc)`	Negative lookahead

`g`	Global match
`i`	Case-insensitive
`m`	Multi-line
`u`	Unicode
`s`	Dot matches newline

Test your regular expressions in real-time with syntax highlighting and a cheatsheet. Use it for developing and debugging regular expressions against sample text. Try edge cases and review capture groups carefully because a pattern that matches a small sample may behave differently on real data.

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