Problem render pages to pdf with images

I'm trying to render html body from email (MimeKit) that contains an embededs images.

I test two ways:

- Changing the attribute img src to "file://" that are locate in an existing local path. For this case, trying to see the html when I paste the html code it makes an error with the image.
- Changing the attribute img src to "data:image" and pasting the string for the bytes[] decoded. In this case it works and I can see the html but I can't create the pdf because there is an error creating the pdfdocument with this image.

Regards,
Andrews