If you would want to have dynamic images on your website, the server in which you host it should have the correct software for this. As opposed to using static images with a fixed size, you can have thumbnails and automatically resized images in accordance with the device a site visitor uses or you could even flip and invert images through a script application. All these things are possible with ImageMagick and GD library - two pieces of software that can be installed on a web server and that work with a wide range of widely used scripting languages including: Perl, Python and PHP. In this way, you may use images with any web-based app that you would like, no matter what language it was designed 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 such as GIF, PNG, TIFF, JPEG, etcetera.