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Developer Tests 8 Chrome Extensions to Reveal How Host Permissions Are Displayed

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A developer behind eight Chrome extensions under Legacy Tools examined how different host permission declarations appear to users in Chrome's extensions manager. Across four declaration methods — broad host_permissions, fixed-site matches, optional grants, and activeTab — the Permissions section appeared blank in seven of the eight tested extensions. The developer found that content_scripts matches entries carry the same access weight as explicit host_permissions, yet produce identical user-facing warnings, meaning a blank permissions list does not indicate a harmless extension. One extension declaring thirty URL patterns displayed only fifteen in the UI due to deduplication, showing that a shorter visible list does not reflect narrower actual coverage. The findings highlight that permission declarations function as user-facing UI rather than mere technical configuration, and that activeTab is worth the added design effort for limiting access.

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