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Regex Tester
Write regular expressions and test them against your text in real time. Highlights matches instantly.
100% Private & Secure
This tool runs in your browser.
Your data is never uploaded or stored.
Test String
How to use
- 1
Enter your regular expression.
- 2
Enter the test string.
- 3
See highlighted matches in real time.
Why use this tool?
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Fast, instant results — no waiting, no page reloads.
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Clean, focused interface designed for developers.
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100% private — everything runs in your browser, nothing is uploaded to any server.
Frequently Asked Questions
Which regex flavor does this support?
This tool uses JavaScript regex syntax.