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Is CSSViewer safe?

This security report analyses whether CSSViewer is safe to install on your browser. We check CSSViewer for malicious behaviour, data exfiltration, suspicious permissions, and known vulnerabilities so you can decide if CSSViewer is safe for your personal or enterprise fleet.

Clean risk

CSSViewer is a legitimate open-source developer tool for inspecting CSS properties. The extension operates entirely client-side with no network requests or data collection.

0Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Updated 10 April 2026ggfgijbpiheegefliciemofobhmofgce

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