You can download all pictures from a Facebook album in a single go. You need to have the viewing permission of that album. This can be done using chrome browser at this moment. Follow these steps.
1. Download and install the PhotoLive chrome extension. Download PhotoLive Chrome extension .
2. Navigate to a Facebook album you want to download and click on the “Download Album” button on the top left.
3: This takes you to the PhotoLive site. It will take some time to prepare and download a ZIP file. The ZIP file will be downloaded to your computer or mobile.
4: Extract the ZIP file to get the images.