ImageMagick and GD are two of the most popular graphic software libraries out there. They make the dynamic creation and editing of images and graphs on an internet site doable, so they need to be installed on a web server if you host your sites on it and you prefer to have something different from static images with fixed dimensions. If ImageMagick and GD are set up, you shall be able to edit any image in many different ways - create thumbnails, change the colors, flip it, blur it, and so forth. Naturally, these changes are feasible if the script app which you employ on your website permits you to do such things. The two libraries could be used with numerous programming languages - PHP, Python, Perl, and so on., and support over a hundred popular image formats that you'll be able to work with - PNG, PSD, JPEG, TIFF, GIF and others.