1
vote
2answers
279 views

Invalid Google markup rel=publisher

Why is Google publisher HTML tag invalid according to W3C specification? Is there any way to correct this example: <a href="http://plus.google.com/109469573972649651137?prsrc=3" rel="publisher" ...
15
votes
5answers
6k views

How can I validate HTML offline?

When I'm developing a website locally sometimes I want to check if the html is valid but I haven't been able to find a good tool. I want it partial as a sanity check when I'm troubleshooting layout ...