CSS out of control

Question

Are there any utilities that will crawl a site and determine which css rules are in use and which are not? We have a large site and a huge CSS file (--don't blame me I just got here). And, I think much of it is not being used however I'm afraid to strip stuff out just in case.

The file is confusing and difficult to manage and I think if we can trim it down by getting rid of the unused rules we will have a good starting point to go through and try to make it better.

Answer 1

Try the Dust-Me Selectors Firefox extension by SitePoint. It finds CSS selectors whose rules are never applied to your pages so you can remove them from your stylesheets.

Answer 2

https://addons.mozilla.org/en-US/firefox/addon/10704/?src=collection&collection_id=23d14a2d-b396-c08f-e9ba-b4d34691d5a9

It's an addon in Firebug.