If you would want to have dynamic images on your website, the web server in which you host it ought to have the correct 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 site visitor uses or you could even flip and invert images using a script application. All these things are doable through ImageMagick and GD library - two pieces of software which may be set up on a server and which work with a wide range of widespread scripting languages such as: Perl, Python and PHP. That way, you could use images with any web-based app that you would like, irrespective of the language it was developed with - a custom-made Perl script or a PHP one. The 2 libraries will allow you to work with over 100 different image formats such as GIF, PNG, TIFF, JPEG, etc.