Regex Playground
Build and test regular expressions with live pattern matching and highlighting.
About Regex Playground
Regular expressions (regex) are powerful patterns used for matching character combinations in strings. This playground helps you build, test, and debug regex patterns with instant visual feedback.
Common Regex Syntax
\d- Matches any digit (0-9)\w- Matches any word character (a-z, A-Z, 0-9, _)\s- Matches any whitespace character.- Matches any character except newline*- Matches 0 or more occurrences+- Matches 1 or more occurrences?- Matches 0 or 1 occurrence{n}- Matches exactly n occurrences
Regex Flags
- g - Global search (find all matches)
- i - Case-insensitive search
- m - Multi-line search
- s - Dot matches newline characters