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Regex Tester
Test, debug, and save regex patterns with real-time highlighting, group captures, and replace preview.
ProductivityBy Regex Tester gives you a fast, in-browser regex testing tool right in your toolbar. No more switching to regex101.com
Free
Updated 2026-09-05Regex Tester screenshots
Overview
Test, debug, and save regex patterns with real-time highlighting, group captures, and replace preview.
Pricing
Regex Tester is free. There is no paid tier to consider.
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View ExtensionFrequently asked questions
Is Regex Tester free?
Yes, Regex Tester is free to install and use.
What are the best Regex Tester alternatives?
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