We get a lot of questions from clients regarding image formats. Not only do they usually want to know what image format to use when sending us their logos, but they also ask about the differences in general. So, I decided to make a comparison of the big three—JPEG (.jpg), GIF, and PNG.
For each, I decided to show examples of the same image in high-quality, a medium quality, and a really (read: “horribly”) terrible quality. You might wonder why I’d include such a horrendous image which you would never use. I think is helps give some insight in how the different formats treat compression/color reduction. Hopefully, it will help you to understand a little more as to what is happening when you save in one of these formats.
Also, I put the examples ove a color background so you can get a good idea of transparencies (if available).