ImageMagick and GD are software libraries that should be present on a hosting server for images to appear on a certain website. They enable you to execute different tasks with the images - create, flip, resize, change colors, etc. These things can easily be done online and in real time, so if you include a static image, for instance, the libraries make it possible for a thumbnail to appear on the internet site or for the image to be resized automatically based on the device and resolution that the visitor is using. Both ImageMagick and GD can be employed with various web programming languages such as PHP, Perl and Python, so you do not have to stick to one particular language to develop your internet site. They work with more than one hundred formats, including the most frequently used ones - JPEG, GIF, TIFF, PNG, and so forth.