How to resume a file download in Firefox

Downloading large files using Firefox can be interrupted by unstable Internet connections, application or system crashes, or even power outages. Being able to resume the downloads helps save time and effort, as compared to restarting the download process all over again. This article shows you two different ways of resuming file downloads in Firefox.

Before you start:
Make PC & Internet faster

Before using one of the following methods to resume your download, it is highly recommended that you optimize the speed of your PC and Internet connection. With an optimized PC and faster Internet speed, you will enjoy smoother web browsing experience, shorter file download time, and less download interruptions.

Learn how to speed up your PC and Internet


Method 1: use the Firefox Download Manager

Firefox provides a download manager that keeps track of files you download. Visit the online help from Firefox to learn how to use the download manager. If the interrupted download is visible from the download manager, then you can resume the download by following the steps below:

Step 1 : Click the Firefox dropdown menu (top-left corner of the browser) and select Download to open the download manager.

Firefox download manager


Step 2: Locate the partially downloaded file that you want to resume from the list of downloads the download manager contains. If the interrupted download isn't listed within the download manager, then you will need to use Method 2 to resume downloading the file.

Step 3: Right-click the file entry and select Resume.

Firefox resume download

Method 2: use UFO and WGet to resume download

If the download manager of the default web browser doesn't have the partially downloaded file you want to resume, you will have to manually resume the download process. The following steps show you how to manually resume downloads by using Ultra File Opener and WGet.

Step 1 : Download and install Ultra File Opener, which provides you with the original download URL.

Step 2 : Download and install WGet. WGet is a free open-source tool for downloading files using HTTP.

Step 3 : Locate and open the partially downloaded file using Ultra File Opener. It provides you both the name of the file and the directory path (as seen below).

Firefox download manager

Step 4: Prepare the complete file path of the download file. Open Notepad and copy both the Target File Path and the Target File Name to form the complete file path. In this case it is C:\Users\ydm\Downloads\Apache_OpenOffice_incubating_3.4.1_Win_x86_install_en-US.exe. You will need this information later.


Step 5 : Copy the original download URL from the UFO screen, by clicking the Copy URL button. This stores the download URL in the Windows clipboard. Go to the Notepad file, in which you have the partially downloaded file path and name from Step 4, and paste the download URL by press Ctrl + V.


Step 6 : Prepare the WGet command-line information using the information prepared in both Step 4 and Step 5. The format for this command-line is: wget -c -O "[full-file-path-target-download-file]]" "[download-URL]". Replace the parameters defined in square brackets with actual data.

Firefox resume download


Step 7: Open the Command-line Window and locate the WGet directory. Copy the entire command-line text from Notepad and paste it in the Command-line Window (right-click and select Paste). Press Enter to resume the download.


Results : If you have both the original download URL and the full file path of the partially downloaded file, then WGet picks up where the download was left off to save you some time and bandwidth. In our example, we successfully resumed and completed the download task.