When you add images to Wiki pages in SharePoint Designer, you might encounter an issue where the Wiki page interprets the image as unsafe content, even if you’re editing the page in normal mode. The image is stripped from the page upon save. In this section, you learn how to add images to Wiki pages and possible workaround to avoid images from being stripped from the page.
Figure 14.35 shows a clip art image added to a Wiki page. Just as when adding images to other pages in SharePoint Designer, the initial page pre-save image URL, shown in the top (code) part of the screen includes a reference to the local users / appdata / directory on the client.