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Regex Tester

Try a pattern against sample text. Runs entirely on your device — nothing is uploaded.

Open the Regex Tester tool

Free, no sign-up, processed entirely in your browser.

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FAQ

Is this safe for sensitive data (API keys, tokens)?

Yes — since processing happens in your browser, nothing you paste or upload is transmitted anywhere.

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Regex Tester — free, runs on your device Open tool →