Regex Tester
Test regular expressions in real-time — paste your pattern and test string, see matches highlighted instantly with capture groups.
About the Regex Tester
Test regular expressions in real-time — paste your pattern and test string, see matches highlighted instantly with capture groups.
Regex Tester lets you write, test, and debug regular expressions in real-time. Paste your pattern and test string — matches highlight instantly with capture groups, flags, and match details. Perfect for building patterns before adding them to your code.
- Type
- Tool
- Method
- live PCRE-compatible regex testing with capture groups
- Runs in
- Your browser — no account, no install
- Price
- Free
- Privacy
- Inputs stay on your device unless the tool says otherwise
Frequently asked questions
A regex tester is a tool that allows users to input regular expressions and sample text to see how the regex matches or captures parts of the text. This is essential for debugging and refining regex patterns.
Simply enter your regular expression in the designated field and provide sample text to test against. The tool will show you matches, captures, and any errors in real-time.
Developers, data analysts, and anyone working with text processing can benefit from a regex tester. It helps ensure that their regular expressions are correct before implementing them in code.
The Regex Tester does not currently support saving patterns directly. However, you can copy and paste your regex into a text editor for future reference.
Yes, the Regex Tester is completely free and accessible online. You can use it without any subscriptions or fees.
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