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Is Yomitan Popup Dictionary safe?

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

Low risk

Open-source Japanese dictionary extension with postMessage handlers lacking origin validation, but limited to internal iframe communication.

v26.1.19.0Chrome Web Store
0Risk

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

Publishers can request a review.

Updated 10 April 2026likgccmbimhjbgkjambclfkhldnlhbnn

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