If you would want to have dynamic images on your internet site, the machine in which you host it needs to have the suitable software for this. Instead of using static images with a fixed size, you can have thumbnails and automatically resized images based on the device a website visitor uses or you may even flip and invert images via a script application. All these things are feasible via ImageMagick and GD library - 2 pieces of software which could be set up on a server and that work with a wide range of widespread scripting languages like: Perl, Python and PHP. In this way, you can use images with any web-based application you'd like, regardless of the language it was developed with - a custom-made Perl script or a PHP one. The 2 libraries shall allow you to work with over a hundred different image formats including GIF, PNG, TIFF, JPEG, etcetera.