A friend of mine has a collection of .jpg that cannot be opened because they start with 0xAD 0xE1 (so says GIMP). Any idea which file format these may be?
Long ago, I used to avoid the PNG image format when building web pages because browser support was lacking. I remember having a PNG on a page could cause the QuickTime plugin to be loaded - yuck. ...
I would like to know which one of these formats requires less memory for the same quality of the picture, and what the main differences between the formats are.