If you would want to have dynamic images on your internet site, the machine where you host it needs to have the appropriate software for this. As an alternative to using static images with a fixed size, you can have thumbnails and automatically resized images dependant upon the device a website visitor uses or you could even flip and invert images through a script app. All of these things are possible with ImageMagick and GD library - 2 pieces of software that can be set up on a web server and which work with a large amount of widespread scripting languages including: Perl, Python and PHP. Thus, you may use images with any web-based app that you would 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 over a hundred different image formats including GIF, PNG, TIFF, JPEG, and so on.