Yes, Please?

Site Check saves you time – fill out only one form instead of a dozen when checking a website. Site Check lists the test results provided by important validators and accessibility tools.

And That’s It?

Additionally, there also is a Site Check Bookmarklet.

A bookmarklet is a little JavaScript snippet contained in a hyperlink. Nearly all browsers allow you to bookmark these links like any other links. Steve Kangas and Tantek Çelik, among others, published other useful bookmarklets.