Images Not Included
If the images are not publicly available, they will be not be included in the PDF. Some systems like cloudflare can also block PrintFriendly from accessing the images.
Grant Access To PrintFriendly
In many systems, access to images can be granted based on User Agent. The User agent we use is
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.81 Safari/537.36 PrintFriendly.com
Enable Image Encoding
If you are a pro customer, set Plugin Settings → Pro Exclusive Features → Encode Images to Yes
This will slow down PDF generation, especially on image heavy pages