1
vote
2answers
73 views

Is it bad to have a mix of HTML 5 and XHTML pages within one website from SEO perspective?

We are going to update our website from well-formed XHTML 1.0 Transitional to HTML 5. However, as I see, we will be doing this step-by-step. This means we will have some pages in HTML 5 and others in ...
1
vote
1answer
46 views

How can we fix the emtpy form action error reported by HTML5 validators for default ASP.NET 4 pages, and will this affect SEO?

We are in the process of upgrading our ASP.NET 4 website from XHTML 1.0 to HTML 5. The <form> tag is generated automatically as it is ASP.NET, and it looks like: <form method="post" ...
2
votes
1answer
59 views

Upgrading website from XHTML 1.0 Transitional to HTML 5: how can it affect SERP positions?

We have an enough old but still supported website which is XHTML 1.0 Transitional now. We are going to change it to HTML 5 to add some new features in the future (microdata, ...
6
votes
1answer
177 views

html5 tags for SEO

I've a question for you. Are now the new HTML5 tags, like <header>,<footer>,<hgroup>,<nav>,... ... really usefoul for SEO? Is google and other search engines considering ...