If you want to have dynamic images on your internet site, the web server where you host it needs to have the proper software for that. Instead of using static images with a fixed size, you may have thumbnails and automatically resized images depending on the device a visitor uses or you could even flip and invert images via a script app. All of these things are doable with ImageMagick and GD library - two pieces of software that may be installed on a hosting server and which work with a large amount of widely used scripting languages such as: Perl, Python and PHP. This way, you can use images with any web-based application you'd like, regardless of the language it was created with - a custom-made Perl script or a PHP one. The 2 libraries will enable you to work with over one hundred different image formats like GIF, PNG, TIFF, JPEG, and so forth.