Regex Tester¶
A real-time regular expression tester. Enter your regex pattern and test text to see matches instantly.
How to Use¶
- Enter Regex: Type your regular expression pattern in the first field
- Add Test Text: Enter the text you want to test against
- See Results: View matches in real-time as you type
Enter regex and text above to see matches...
Matches: 0
Features¶
- Real-time Testing: See results as you type
- Match Details: View each match with position information
- Error Handling: Clear error messages for invalid regex
- Responsive Design: Works on all devices
Privacy & Security¶
🔒 100% Client-side: All processing happens in your browser. No data is sent to any server or saved anywhere.
Common Regex Patterns¶
| Pattern | Description | Example |
|---|---|---|
\d+ | One or more digits | 123, 456 |
[a-z]+ | One or more lowercase letters | hello, world |
\w+ | One or more word characters | hello123, world_ |
\s+ | One or more whitespace characters | \t |
^ | Start of line | ^Hello |
$ | End of line | world$ |
.* | Any character (zero or more) | .* |
.+ | Any character (one or more) | .+ |
[0-9]{3} | Exactly 3 digits | 123, 456 |
[a-zA-Z]{2,4} | 2-4 letters | ab, xyz, abcd |