The biggest advantage of PNG over JPEG is that the compression is lossless, meaning there is no loss in quality each time it is opened and saved again. PNG also handles detailed, high-contrast images well.
The Difference between PNG and JPG PNG stands for Portable Network Graphics, with so-called “lossless” compression. That means that the image quality was the same before and after the compression. JPEG or JPG stands for Joint Photographic Experts Group, with so-called “lossy” compression.
While both PNG and JPG are ideal for a multitude of web-based projects, each is best for specific kinds of projects. BMPs are well-suited to images that you have to edit, and TIFF images are your go-to when you have the luxury of not caring about size and concentrating on nothing but the sheer quality of your prints.