VT4Browsers
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VT4Browsers: Virus Scanning Web Extension for Firefox
VT4Browsers is a Firefox extension that enables users to scan their downloads using VirusTotal's free service before storing them on their system. By checking files or links with VirusTotal, users can avoid infections and other undesired outcomes from suspicious items. The extension also allows users to share their DNS resolutions with the security industry for collective safety, with the assurance of never being tied to their identity. Note: VT4Browsers is not an alternative to antivirus or security products, but a valuable addition for a second opinion.
Add-on stats
Manifest V2
By: VirusTotal Team
Rating: 4.00 
(106)
Weekly download count: 127
Firefox on Android: No
Permissions:
- webRequest
- webRequestBlocking
- contextMenus
- downloads
- storage
- <all_urls>
Size: 250.81K
URLs: Website ,Privacy policy
Full description: See detailed description
Ranking
Other platforms
Not available on Android
Not available on Edge
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Helps in faster checking of links and downloads using VirusTotal
- Adds an additional layer of safety
- Well built with a minimal number of problems and errors
- Efficient and effective when functioning correctly
- Saves time and clicks during the scanning process
Cons
- Unnecessarily restricted without paid premium API access
- Frequently cancels downloads or fails to scan files
- Breaks functionality on some websites (e.g., PayPal, CSRF check failures)
- Incompatibility with other script-blocking add-ons (e.g., uBlock Origin)
- Lack of upload history and inability to retroactively upload files
Most mentioned
- Requires a premium API for full functionality
- Causes issues with website interactions and login processes
- Inconsistent performance where it fails to scan files or provide results
User reviews
Unnecessarily restricted without the paid premium API access, that said, VT4Browsers is very helpful and seems to be well built with a minimal/acceptable number of problems and errors. Having a VirusTotal free account is recommended.
by lil_king420, 2025-02-24
by 天灭中共退党团队保平安, 2025-02-15
by Job1135, 2025-01-18
Add-on safety
Risk impact
VT4Browsers requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of VT4Browsers. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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