ImageMagick and GD are software libraries which should be present on a server to enable images to appear on a specific site. They enable you to execute different tasks with the images - create, flip, resize, change colors, and so on. These things can certainly 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 internet site or for the image to be resized automatically depending on the device and resolution that the visitor is using. Both ImageMagick and GD can be employed with many different web programming languages including PHP, Perl and Python, so you don't need to stick to just one language to create your internet site. They work with over 100 formats, which includes the most frequently used ones - JPEG, GIF, TIFF, PNG, and so forth.