Dropbox updated its interface to give simpler, more powerful, and more beautiful web experience to its users. Introduced new simple and gorgeous photo viewer that lets use entire screen to view pictures or videos.
Dropbox also introduced keyboard shortcuts for easy mouseless browsing. You can view full list anytime by pressing ?
Dropbox keyboard shortcuts
↑ Select previous file (hold Shift to select range) ↓ Select next file (hold Shift to select range) ctrl + a Select all files esc Deselect all files (and hide these instructions) ← Up a folder / Search → Open folder enter Download or open file ctrl + c Copy selected file(s) ctrl + v Paste selected file(s) into the current folder F2 Rename selected file Delete Delete selected file(s) ? Show keyboard shortcuts