How do I get an embedded file to preview within the page? – Stanford University

In the rich text editor, click the dropdown arrow for Documents and select Course Documents.
From the hand-hand panel that appears, search your course files and choose a file you'd like to add to the RCE by clicking on the file name.
The file name will appear in the RCE. Use your mouse and click on the file name. Select Link Option that appears.
A panel will open to the right. Select the option to 'Automatically open an in-line preview)'.
Click done.