How To Install Facebook Photo Album Downloader
Download the extension here
Extract the downloaded file into a directory, say C:\ChromeExt
Launch Chrome browser. Click Tool Icon>Tools>Extension
On Chrome Extension page, check Developer Mode option and click Load unpacked extension… button.
Browse and select the directory where you extracted the downloaded file (see step 1). Click OK
Once it loaded, try to browse a Facebook Album. You may test on my public album:
Shandhy Adi Putra. Wait until the page finishes loading. A pink icon should appear at the right end of address bar.
Click on it and you should see a newly created tab with Facebook photos (of the album you are viewing) being loaded. Once they are all finished, press Ctrl+S to save the page along with the full-sized photos on it.
Sometime, as a Chrome behavior, new tab not created. Just repeat clicking one more time until the new tab appear.
Visit Official Page for more informations.