Keep track of your current and past downloads with the download manager. To start the download manager, in the menu bar, click Tools › Downloads. While downloading a file, a progress bar indicates the download status. If necessary, pause the download and resume it later. To open a downloaded file with the associated application, click Open. To open the location to which the file was saved, choose Open Containing Folder. Remove From History only deletes the entry from the download manager, however, it does not delete the file from the hard disk.
By default, all files are downloaded to ~/Downloads. To change this behavior, in the menu bar, click Edit › Preferences. Go to General. Under Downloads, either choose another location or Always ask me where to save files.
Tip: Resuming Downloads
If your browser crashes or is closed while downloading, all pending downloads will automatically be resumed in the background when starting Firefox the next time. A download that was paused before the browser was closed can manually be resumed via the download manager.