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Is Lumin: PDF Editor, Edit, Sign, Merge, Share and Print PDFs safe?

This security report analyses whether Lumin: PDF Editor, Edit, Sign, Merge, Share and Print PDFs is safe to install on your browser. We check Lumin: PDF Editor, Edit, Sign, Merge, Share and Print PDFs for malicious behaviour, data exfiltration, suspicious permissions, and known vulnerabilities so you can decide if Lumin: PDF Editor, Edit, Sign, Merge, Share and Print PDFs is safe for your personal or enterprise fleet.

Low risk

Legitimate PDF viewer extension with a postMessage handler that has insufficient origin validation for iframe communication, though exploitation risk is limited by the legitimate business relationship with sign.luminpdf.com.

0Risk

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

Publishers can request a review.

Updated 10 April 2026dbkidnlfklnjanneifjjojofckpcogcl

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