perfa

This addon prevents the virustotal site from working and possibly others according to another reviewer.

One workaround is disable this addon from working in a private window then open a private window to use virustotal's site.

But I don't like addons messing with my ability to browse websites. I'll be looking for another download manager addon.

List of files from manager is gone after restart but is shown in firefox manager. List of downloaded files still appears on bottom of FF even i closed it at least 10 times.

This downloads the file but is very lacking.
The download starts when you right-click the link.
You are given no opportunity to rename the file
or select where you want the file saved.
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I discovered that: under 'Files And Applications,'
setting Downloads to Always Ask fixes this issue.

How can Firefox recommend this.
If you are downloading and you close Firefox, it cancels all the downloads.
If, before closing Firefox, you pause the download, then when you restart Firefox the download is not listed anywhere.
So you cannot resume it either way, which at least for me was the only reason for installing it.

It just monitors Firefox download manager, dumb app

It doesn't work very well under Queue Mode. I set it only download 1 file at a time, but there are often 2, sometimes even 3.

Unfortunately, there is no function to download links in a selected fragment of a web page or on the entire web page, with filtering by extensions. There is no way to save a link to the original location of the file in descript.ion. Or better yet, a description of the downloaded file added by the user.