Basically if an image is published it is likely to be copied one way or another. Maybe consider watermarking and or only providing low resolution copies of images in such pdf s. I will close this question. Anyone wishing to give detailed advice may do so in your original thread * ''Firefox allows the printing of PROTECTED files on my server. WHY?'' [/questions/992183] I could certainly copy an image from a pdf displayed or downloaded by browsers other than Firefox.