Is Global Speed - Video Speed Control Safe? — Extension Safety Profile

This extension requests broad permissions that allow it to read and modify data on any website you visit, including local files. Specifically, it can inject scripts into pages (scripting, userScripts), observe navigation, interact with tabs, capture tab audio or video (tabCapture), and run background tasks. For a video speed controller, it is normal to need scripting access across many sites to adjust playback—but the inclusion of tabCapture and file:// URLs goes slightly beyond the minimal scope, giving the extension the technical ability to access media streams and local documents.

As with any general-purpose extension that can run code on all pages, careful users should consider that updates—whether intentional or due to a compromised publisher account—could alter its behavior unnoticed. The developer has declared that data is not sold or used for unrelated purposes, but those are self-reported claims. Extensions in this category are sometimes cloned or repackaged to mimic popular tools, so it is wise to verify you are installing the official version from the proper publisher and to periodically review its permissions and ratings.

The strongest dimension in the score is Maintenance & Ownership (100%), indicating the extension is actively maintained and the publisher’s identity is clearly established, which reduces the risk of abandonment or hijacking. The weakest is Permissions & Access (58%), reflecting the significant reach of its technical capabilities—a reminder that even a well-maintained extension must be trusted with extensive access to function as advertised.