If you would like to have dynamic images on your internet site, the web server where you host it must have the proper software for that. Rather than using static images with a fixed size, you can have thumbnails and automatically resized images based on the device a visitor uses or you may even flip and invert images via a script app. All of these things are feasible via ImageMagick and GD library - 2 pieces of software which may be installed on a server and that work with a large amount of frequently used scripting languages including: Perl, Python and PHP. That way, you may use images with any web-based application you want, regardless of the language it was designed with - a custom-made Perl script or a PHP one. The two libraries shall allow you to work with more than one hundred different image formats such as GIF, PNG, TIFF, JPEG, and so on.