I am being sent Email attachments (copies of book pages taken on an iphone) When I view them part of the screen is meaningless code and then a very small Jpeg image.
I can read the image on my screen using the magnifier but wish to print it on an a4 sheet at a readable size.
Using W10 on desktop, printer is Canon MP492. My attempts so for have only resulted in a tiny image about the size of a fag packet or playing card and a load of gobledegook code.
Try dragging and dropping the jpeg file (photo) onto your desktop and then double click it to view it. If it is still very small it is because it is very low resolution and the iphone setting that took it needs to be changed to take high resolution pictures. Ask your sender to check (and change) their iphone resolution.