Online Regex Tester
Test and debug your regular expressions with our powerful and intuitive online tool. Get real-time feedback with match highlighting as you type, and explore detailed information about each match, including groups and indices. This regex tester is perfect for developers, data scientists, and anyone working with text patterns. All testing is done securely in your browser.
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How to Use This Regex Tester
- Enter Your Regular Expression: Type your regex pattern into the top input field. You can use the 'g' (global), 'i' (case-insensitive), and 'm' (multiline) flags by clicking on them.
- Provide the Test String: In the larger text area below, type or paste the text you want to test your expression against.
- See Instant Results: As you type, any matching text will be highlighted in real-time. Below the text area, you will find detailed information about each match, including its index and any captured groups.