Validate markup of password-protected sites with W3C

Question

I have an online app that I am wanting to validate the HTML markup of against the W3C validator.

Problem is users need to log in first to access them.

How do I go about validating these pages?

Answer 1

With this html validator extension. Or by Ctrl-U, copy-paste into the w3c page.

Answer 2

You have to run the service they provide on your server:

http://validator.w3.org/docs/install.html

Thats what we've done, works great.

I think it's best practice to be validating your sites source when it's in development not when its in production... Treat this just like running unit tests. You shouldn't have markup errors go live either.