title: creating a thumbnail-preview image on the fly from a big image
body: <p>I have a list of images which are in quite a big resolution, over 2000x1000 pixels. I want to display them on a page as thumbnails, but I don't want to actually/physically create thumbnails and store them on a server. Is there any unexpensive way to generate such images-thumbnails on the fly? Maybe using html5.</p>