ImageMagick and GD are software libraries that should be present on a hosting server to enable images to appear on a specific website. They allow you to carry out different tasks with the images - create, flip, resize, change colors, etcetera. These things can certainly be carried out online and in real time, so if you include a static image, for example, 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 website visitor is using. Both ImageMagick and GD can be employed with lots of web programming languages including PHP, Perl and Python, so you do not have to stick to only one language to develop your site. They work with more than 100 formats, including the most popular ones - JPEG, GIF, TIFF, PNG, and so on.