Ask HN: Is there a website to generate resized/cropped images

...based on what info you give it in the query string? For example, you could do something like: <img src="http://website.com/?original=http://something.com/test.jpg&height=100&width=100" /> And then website.com would take test.jpg and resize/crop it down to 100x100 and output it on the fly. Does something like this exist? If not, I want to make it.