Diễn đàn hỗ trợ Firefox

Unfortunately, my workflow involves dealing with multiple PDF files per day. However, for some reason, Firefox's behavior with regards to PDF files is inconsistent.

• If I set the Action to Save File, Firefox downloads all PDF files, including those that it can normally open in the browser when I click a link (e.g. files hosted in servers that allow direct access to PDF files). As such, my Downloads folder is cluttered and needs to be cleaned regularly to delete the PDF files that were downloaded even if I could have opened them in the browser.
• If I set the Action to Open in Firefox, Firefox can now open those hosted PDF files in the browser instead of downloading them to disk. However, every time I download a file, Firefox then opens the file in Firefox after downloading, even though I need to edit the PDF file somewhere else.

Would it be possible to set Firefox's behavior so that it does BOTH of these things:

1. Open PDF files that can be opened in the browser without downloading in Firefox without needing to be downloaded, AND
2. Do not open downloaded PDF files in Firefox after downloading is complete.

The Firefox 'Downloads, Save Files To.." location appears to be disconnected from reality. If I indicate either of the Documents or Desktop folders as the preferred save location, both of those folders present as being empty when in fact they both have numerous files/directories. Even if I try to save in "+ Other Locations", those locations are limited to the same as presented in the 'Browse' window of Home, Desktop, Documents and Downloads. Only the Downloads folder displays correctly.

Also as a result of this limited save location, I can only retrieve a file from the Downloads folder (the attached file was saved in my Documents folder but I had to move it to Downloads.

Why does the saving behavior behave like this?