Windows 10: Firefox 89.9.1 (64-Bit) How to auto download EPUB files

I don't know if this is possible or not but I was wondering if there is a way to auto download EPUB files without needing to confirm every times with Firefox. I have been downloading free ebooks lately and every time I download a .PDF file it will automatically download for me to the downloads folder but when it comes to other file types like .EPUB I need to click the download link and then wait for the window to open asking me what I want Firefox to do. No matter how any .EPUB files I download there is never a option just to download the file. I don't need a ebook reader on Firefox I just need a fast way to download the files by type and have them just automatically go into the downloads folder. Is there a way to do this with Firefox itself or do I need to download a downloader of some sort for different file types. Or is this even possible. I hope I explained myself correctly. If not just ask me to give more details and I will try.

:)

 

Firefox 64-bit is now available to download


Another option would be Firefox Dev Edition (x64) run side by side as they use separate profiles,
(although, I suggest making Dev the default and don't run them side by side if you're short on RAM)

 

Firefox 64-bit is now available to download


So far so good with Firefox 64 bit. All extensions and plugins for the 32 bit version work. I firs uninstalled the 32 bit version but that does not delete my bookmarks, plugins, extensions or preferences. I got it for this Mozilla site:
Directory Listing: /pub/firefox/releases/

 

Firefox 64-bit is now available to download

Oh, I meant that within the program, it looks almost identical to 32-bit Firefox, except for the user-string, about: page and uninstaller name.