Regex Tester & Explainer

Enter a regex and a test string, then click Test Regex to see matches highlighted.

Select Language

Regex Pattern

Test String

How to Use the Regex Tester

Select your preferred language
Enter a regex pattern and optional flags
Enter/paste a test string in the editor
Click Test Regex
Matched text will appear in green and unmatched in red
View detailed explanation of your regex

💡 Pro Tip: Regex behaves slightly differently across languages. Use this tool for quick testing, but always confirm in your target language environment.