This service is free to use, or download and run your own.
We love giving you stuff, so please check these out. These links are examples of both the short URL and the preview pages.
cssminifier.com helps you minify your CSS assets. Over a million hits per year and over 4,500,000 minifications, it's the tour de force of CSS Minification sites.
pngcrush.com aims to get the most out of your PNG images, by crushing them as much as possible. Give it a go to see how much you can save.
publish.li allows you to publish articles or documents without having to sign in. Just type your title and content and click 'Publish'.