If you have ever worked with computer graphic images, whether they be from digital cameras, found on the web, or you create them yourself, then you know there are a lot of image file formats that are ...

Chances are good that you’ve witnessed a wide variety of file formats flit across your screen, but do you really understand what they mean? For example, you may understand that a JPEG is for pictures ...

PostScript files can also contain images of very high quality, but they use a very different representation of data than do raster image files. PostScript is actually a language rather than a file ...

There's a lot to learn about image files on the command line, from verifying file format to finding out where and when photos were taken and maybe even getting an unusual view of what they look like.