Item picture resizing in print format

Hi all,

Is there any way to resize the item image in print format? I mean to downscale the image resolution on the fly, as I resized it with CSS and it looks too jagged on the screen (you have to make a 500% zoom to see it clear).

Iā€™m looking for a solution like this: Usage ā€” Flask-Resize 2.0.4 documentation

Best regards,