A CSS Sprite is a load of images lumped together into a single image file. They're used as a technique to make your websites load faster, by decreasing the number of HTTP requests your users have to make. Each request will contain the overhead of HTTP headers (including cookies) and the connection's latency. By using a single image file instead of many, you can dramatically decrease the time it take your pages to load.
This tool generates:
First upload the image file and add the CSS to your stylesheet.
Then replace your images with code to load the sprite.
CSS classes are generated from the image filenames you upload, so for example:
At the moment just via Twitter
About half an hour to an hour, then they're deleted
I don't give them out or intend to look at them, but can't guarantee they will remain private.
Yes - see the CSS Sprites API page.
Not at the moment, but if I receive enough interest I might clean up the code and release it.
The sprite generator is written in PHP, using the GD image functions.
The front-end, including the multiple-file uploader is written using The Yahoo! User Interface Library (YUI).
Output images are compressed using Smush.itThe Smush.it API has been temporarily removed.