What the site that checks code?

Whats the site that checks code for webpages and corrects them for you?:s

I'm not sure about corrects? But this will check if your HTML/XHTML is valid.
http://validator.w3.org/

thankyou
:D

http://www.w3schools.com/site/site_validate.asp ?

edit; yeah, beaten. (H)

thankyou!

Thread closed.