Developer Tools
Regex Tester
Test a regular expression against sample text and inspect matches before using it in code.
About this tool
Test a regular expression against sample text and inspect matches before using it in code.
Best use cases
Use it for log parsing, form validation, search patterns, data cleanup and quick debugging of expressions.
Input and output
Input: regex pattern and test text. Output: matched fragments and match details.
Important limits
Regex behavior can differ between programming languages; verify important patterns in your runtime.
How to use
- Enter a pattern.
- Paste sample text.
- Review matches.
- Adjust and copy the expression.
FAQ
Is Regex Tester free?
Yes. Regex Tester is free to use in the browser and does not require registration.
Can I use the result in production?
You can use the result as a practical helper, but important output should be reviewed and tested in the target system.