How to Compress Images for Publishing

When I'm using images, you need to think about compressing them. It's an interesting thing that people aren't compressing images at all today,. Because they don't really care, it seems. Well, what are people doing? People are setting the width and height in specific ways. They've been told that their CMS deals with it automatically. You know, Google PageSpeed as a benchmark for that is still saying you could get more out of the images.