Free Developer Tool
Regex Tester
Test and debug regular expressions directly in your browser.
Matches Found1
hello world
#1
hello
What is Regex Tester?
Regex testers help developers debug and validate regular expressions quickly.
How to use
- Enter regular expression.
- Paste test string.
- View regex matches instantly.
Features
- Regex testing
- Highlight matches
- Real-time updates
- Fast browser execution
- Client-side processing
Example
Input
\hello
Output
1 matches found
FAQ
Does this tool support JavaScript regex?
Yes. JavaScript regular expressions are supported.
Can I test regex flags?
Yes. Global, multiline and other flags are supported.
Is my text uploaded?
No. Everything runs locally in your browser.
Missing a feature?
If this tool doesn't cover your use case or is missing functionality, please let me know through the Contact page.
New improvements and features are added based on user feedback.