If you want to have dynamic images on your internet site, the server where you host it should have the appropriate software for this. As opposed to using static images with a fixed size, you may have thumbnails and automatically resized images dependant upon the device a visitor uses or you could even flip and invert images using a script application. All these things are doable via ImageMagick and GD library - two pieces of software that could be installed on a hosting server and which work with a great number of widely used scripting languages such as: Perl, Python and PHP. In this way, you could use images with any web-based application you want, no matter what language it was designed with - a custom-made Perl script or a PHP one. The 2 libraries will enable you to work with more than 100 different image formats including GIF, PNG, TIFF, JPEG, and so forth.