Here’s a short, sweet, and potentially very useful hint for your Thursday. You may think of Preview as mainly an image viewer, and not an image creator. BUt that’s not necessarily true; Preview can ...

What is JPEG file format? The acronym stands for Joint Photographic Experts Group, and that’s the name of the subcommittee that helped create the JPEG standard, along with other standards such as ISO.

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.