From E-Learning Faculty Modules
Consult the User's Guide for information on using the wiki software.
Imagery should be .jpg format. And the dpi should be 400 or 600 dpi in width for basic consistency.
To upload the imagery, sign in. Then go to Upload file at the bottom left of the menu bar. Upload the file.
Go to the entry that you're working on, and insert an "Embedded file." Embed the file based on the file name given to the uploaded file, and save the page.
The page should show the image.