Dropbox allows you to create an album to add photos and videos, download them to computer or mobile devices, delete them, share them to family and friends. You can add photos, videos and files to an existing album on Dropbox. To add photos to an album, click 'Photos' page located at the left sidebar on the website. You have another option to add photos to an album i.e drag-and-drop. Select the photos which you want to add and drag them to an album listed in the left-hand sidebar.