What is this guide for? To teach you how to use the correct image formats for the correct situation. I am personally fed up of seeing people use gif for photos, jpeg for Windows screencaps, and other totally inappropriate image format uses. So I made this guide in an attempt to explain how and when to use what formats. Yes, this does require a fair bit of reading and understanding, so if you aren’t going to be bothered close your browser now and save my bandwidth.