Η VirusTotal is a useful online virus detection service owned by Google since 2012. The developers of the service have developed the VT4Browsers plugin for proletterFirefox and Google browsers Chrome.
VT4Browsers automatically submits certain file downloads to Google's VirusTotal scan service. You can then click on a link displayed by the extension to open the scan results on the VirusTotal site.
The extension submits files you download from the web with the exception of document file types by default. But you can change it default behavior of the extension from the settings.
The settings are divided into a public section for the general public and a section for users who have an API key. Adding the API to the extension unlocks advanced features.
You can read more in the support article of VirusTotal that provides additional information on all new options.
As mentioned above, the VT4Browsers add-on is available for Chrome and Firefox.
But most browsers based on the Chromium of Google works fine with the extension.
You can try the extension in the browser you are using and let us know in the comments.
