Print Jet PopUp From Button

For Print-Pro-Matic support please contact the support channel in the purchase receipt, as support for premium plugins is against the WordPress Forum guidelines.

since your question also apples to the free version, we will answer it here for others in the community.

1. print out from automatically – It is not possible to have anything from a browser automatically trigger a print. Browsers have a standard print dialogue box that will allow the user to do things like a) select a printer, b) download the print as a pdf file, c) scale the print, etc…

2. To print the image out all full height (or width), use @media print CSS such as:

@media print {
   img {
       max-height: 100%;
       width: auto;      
   }
}

or

@media print {
   img {
       max-width: 100%;
       height: auto;      
   }
}