Web designers, come and see this article about image formats! It is important for you, the loading time of your pages is mostly about the size of your images or animations on your pages. Knowing the image format basics well will let you have better quality images with smaller filesize. Most of the web designer rookies only uses JPEG, because they don't know other formats. They just know JPEG is the best, actually it is true, she is the best for their knowledge, because they only know about BMP and JPEG :) But don't forget that most of the web page images are small images with containing little variations of colors, so GIF or PNG is mostly the best (except real photographs, or colorful big photo files of course) and mostly used image type for web designers.
There are various image formats that stores a picture or image as digital data. Most popular ones are: JPEG, BMP, GIF and PNG. In this topic, I will not go into the details of all, because everyone can be a standalone topic and hundreds of pages of theoretical documentation, but I will discuss similarities, differences, properties and major advantages of/between them. Also, we will discuss which one to use when for most common uses, this will be a practical topic rather than a theoretical.