In Confluence, files can be uploaded, stored, and distributed to viewers and visitors. They can be displayed as clickable thumbnails but for efficiently they are better presented as links. When clicked, many file types appear in a viewer, where visitors can read or view text, tables, images, and other illustrations, and scroll between pages. If visitors have access to a file in Confluence, they can download a copy of it to their device.
Here is an example of a file stored by the wiki. You can see this sample PDF in a viewer by clicking the link: