You can preview files and folders in either full screen or quick view on dropbox.com:
- Full screen: File and folder previews will take up the entire browser page.
- Quick view: File and folder previews will take up the right half of the browser page, with your Dropbox file list and navigation on the left.
To manage your preview preferences:
- Log in to dropbox.com.
- Click the preview icon (half filled-in square) in the upper right, above the file list.
- Check or uncheck the boxes next to Files open in quick view and Folders open in quick view.
To preview a file or folder:
- Log in to dropbox.com.
- Right-click the file or folder you’d like to preview.
- Click Open in.
- Click Preview (Dropbox).
From here, you can star, share, download, comment, and take other actions, depending on the file type or folder.