Hi Clint,
The following code collects all images found in a text document:
NList<NNode> imageInlines = richTextView.Content.GetDescendants(NImageInline.NImageInline);
similarly for hyperlinks the code is:
NList<NNode> hyperlinkInlines = richTextView.Content.GetDescendants(NHyperlink.NHyperlinkSchema);
Regarding the hyperlink url:
NHyperlinkInline hyperlinkInline = (NHyperlinkInline)hyperlinks[0];
string url = (hyperlinkInline.Hyperlink as NUrlHyperlink).Url;
Hope this helps - let us know if you meet any problems.