Test regex patterns in real time
Validate patterns quickly before adding them to application code.
About This Tool
Regex Tester lets you experiment with patterns and flags against sample text so you can debug matching behavior faster.
How to Use This Tool
- Enter a regex pattern and test text.
- Choose flags like g, i, or m.
- Run test and inspect all matches.
Why Use This Tool
- Reduces regex trial-and-error in code.
- Shows exact matches clearly.
- Great for validation and parsing tasks.
Frequently Asked Questions
What regex syntax does this use?
It uses JavaScript RegExp syntax.
Why do I get no matches?
Check pattern, flags, and escaping in your expression.