If you surf the web with Firefox, then you’ve no doubt noticed the Downloads window that appears when you download a file. While this window makes it easy to view the progress of downloads as they occur, one default behavior can be a little annoying for those who download files on a regular basis – namely the fact that the program will leave the Download window open once the download is completed.
This feature is helpful for users who like to launch downloads immediately (using the window’s Open link), but not as much for users who’ve configured Firefox to download files to a particular folder for later use. If you’re in the latter camp, follow these steps to have the Downloads window close automatically once your downloads are complete.
Open Firefox, type about:config in the address bar, and press Enter. Browse to the setting called browser.download.manager.closeWhenDone, double-click it to change the value to True, and the the Download window will now close automatically when downloaded files are complete.