If you would want to have dynamic images on your internet site, the machine where you host it ought to have the proper software for that. Rather than using static images with a fixed size, you may have thumbnails and automatically resized images dependant upon the device a site visitor uses or you may even flip and invert images using a script application. All these things are feasible with ImageMagick and GD library - 2 pieces of software which can be set up on a hosting server and that work with a great number of popular scripting languages such as: Perl, Python and PHP. In this way, you may use images with any web-based application that you'd like, regardless what language it was developed with - a custom-made Perl script or a PHP one. The two libraries will enable you to work with more than 100 different image formats including GIF, PNG, TIFF, JPEG, etcetera.