"Progressive" JPEG: Why do many web sites avoid rendering JPEGs that way? Pros, cons?
- by Chris W. Rea
When JPEG images are used by a web page, they are typically rendered top-down ... but they can also be rendered using a mode called progressive JPEG, where the image starts out full-size, but blurry, and then gets sharper with successive passes, until it's fully loaded. Progressive loading requires the image have been saved that way.
Why don't…