Regex QA Tester

Test and validate regular expressions with sample text before they land in code or QA checks.

Test Regular Expression

Common Regex Patterns

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Enter a regex pattern and test text to see matches

Regex Quick Reference

Character Classes

\d - Any digit (0-9)
\w - Word character
\s - Whitespace
. - Any character
[abc] - 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 - a or b

Flags

i - Case insensitive
m - Multiline mode
s - Dot matches newline