Regex Tester
Test regular expressions and view match results.
Match Results
Invalid regular expression
About this tool
The Regex Tester evaluates a regular expression against sample text and highlights every match in real time. Flags such as case-insensitive and multiline are toggleable so you can iterate quickly.
Common use cases
- Prototype a pattern before pasting it into a script or codebase.
- Debug an expression that is not matching the strings you expected.
- Learn regex by experimenting on safe sample text instead of production data.
- Validate user-input rules such as email or phone formats before implementing them.