Your friends might have uploaded photos to Facebook and you might want to download these albums. But manually saving photos one by one might not be feasible if the album has large number of photos. PhotoLive is a neat extension for Google Chrome which lets you download all the Facebook albums easily. You can download any album (even your friends album) if they are visible to your account. All you need is to open the album and you can see a download button on the top.
Once you install the extension, you can see the download album button available on all the albums. When you click the button, it opens up a new tab and it prepares for the download. Once the preparation is complete the album is automatically downloaded.
The photos of the album is zipped and you can download the entire album in a single file. If you want to download multiple photos from an album without downloading the entire one, then you can use this URL to add the links to download.