Is HTML5 Video Speed Control Safe? — Extension Safety Profile
Quick verdict: HTML5 Video Speed Control earns a safety grade B, 78.6 out of 100, based on 5 of 5 dimensions.
78.6/100
Grade B · 5 of 5 checks
What we found
Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.
What this safety grade means
HTML5 Video Speed Control earns a safety grade of B (78.6/100), measured across 5 of 5 dimensions. Its strongest area is Data & Privacy (100%). The weakest is Maintenance & Ownership (10%) — what holds its grade back the most.
On the public records we can check, HTML5 Video Speed Control looks broadly trustworthy. 40,000 active users/installs reported on the store. Store rating 4.5/5 from 1,300 user ratings. Last updated on the store 2022-03-17. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open HTML5 Video Speed Control's own store listing and privacy policy before installing, and weigh it against the other video speed controllers extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts | Automated signals | |
| Permissions & Access | 90% · 22.5/25 pts | Automated signals | |
| Data & Privacy | 100% · 16/16 pts | Automated signals | |
| Maintenance & Ownership | 10% · 0.8/7.5 pts | Automated signals | |
| Community Reputation | 83% · 8.3/10 pts | Automated signals |
In-depth safety analysis
The extension requests activeTab, storage, and scripting permissions. This is a typical set for a video speed controller: activeTab lets it act on the current tab only when you invoke it, scripting injects the speed-control code into the page, and storage saves your preferences across sessions. It cannot modify other tabs or access data without a user click on the toolbar icon, and its scope is normal for the category.
Video speed tools by design need to read and alter the active webpage’s media elements. A general safety consideration for such extensions is that they can see the pages where you use them, so they should come from a trusted developer and remain actively maintained. If an extension goes unupdated for years, there is a theoretical risk that a publisher account could be compromised and used to push a malicious update, even if the current version behaves safely.
The strongest dimension in the fact sheet is Data & Privacy (100%), based on the developer’s declarations that data is not sold or used for unrelated purposes. These claims are self-reported and not independently verified. The weakest dimension is Maintenance & Ownership (10%), directly tied to the last update date in March 2022 and the low publisher identity score, indicating the extension may be abandoned. Users should weigh that lack of recent maintenance against the otherwise minimal permission footprint.
AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.
What the store listing shows
Who's Behind HTML5 Video Speed Control?
- Publisher Cool Apps
Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.
How it compares
Among the 6 Video Speed Controllers extensions we track, HTML5 Video Speed Control scores higher on safety than 50% of them.
Computed from our own database of assessed Video Speed Controllers extensions — updated as we track more.
Evidence on File (12)
HTML5 Video Speed Control FAQ
- Is HTML5 Video Speed Control safe?
- HTML5 Video Speed Control earns a safety grade of B (78.6/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
- Who is behind HTML5 Video Speed Control?
- HTML5 Video Speed Control is operated by Cool Apps.
Alternatives we track
Browse all browser extensions we've checked → · Best Video Speed Controllers extensions