A small service for providing resized images based on query string.
If you link to an image normally, that's the image that's served, but if you add a ?s=X query
parameter, then this script will serve a resized version where X is the maximum size (width or
height) of the new image.
The resized image is cached to allow for speedier subsequent loading, but will be re-generated if the original image has been modified since the cached image was created, so the images are never out of sync.
View demo: http://demo.gridlight-design.co.uk/image-service.html
The PHP script required the PHP GD Graphics Library.