ImageMagick and GD are software libraries that should be present on a server for images to appear on a certain website. They permit you to execute a variety of tasks with the images - create, flip, resize, change colors, and so on. These things can easily be performed online and in real time, so if you add a static image, for instance, the libraries make it possible for a thumbnail to show up on the site or for the image to be resized automatically depending on the device and resolution which the website visitor is using. Both ImageMagick and GD can be employed with many web programming languages such as PHP, Perl and Python, so you do not have to stick to one particular language to create your internet site. They work with more than 100 formats, which includes the most popular ones - JPEG, GIF, TIFF, PNG, and so forth.