Doctype Tag and SEO


Today’s HTML tag we review for its SEO influence is the <!doctype> tag:


<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “”>

For more information on how to use the doctype depending on the version of the html you’re using, visit

What designers should know about the doctype tag in terms of SEO

When you cut your psd file into html/css yo need to add this piece of code on the very top of each page.

What SEOs should know about the doctype tag

The doctype document is not having any influence on your SEO job. However, make sure the designer added the tag on all page. Ohterwise, don’t mind about it.

What programmers should know about doctype

This tag is your responsibility. Make sure you it is present on all pages. Without the doctype declaration you won’t be able to check the validity of your documents. Once you declared the doctype and you think you’re donne with your programming part go to See, you only thought you’re done. Fix all issues – missed alt text, duplicate ids ans deprecated tags. You may want to check your website for accessibility issues also (once you are html/css/accessibility valid) you can you W3 trust logos on your site footer (if it makes sense, i.e. you have IT portfolio website)

What copywriters should know

Don’t mind about this tag. You keep working on original, quality content for the website

Pitstop Media offers ROI focused SEO services. If you need a SEO company to help you rank #1 please contact us for a free, no obligation quote. We’ve helped companies rank first on Google in short periods of time, for highly competitive terms.

VN:F [1.9.22_1171]
Rating: 9.5/10 (2 votes cast)
VN:F [1.9.22_1171]
Rating: +2 (from 2 votes)
Doctype Tag and SEO, 9.5 out of 10 based on 2 ratings


Traian is Director of Search Marketing at Pitstop Media Inc. He has more than 11 years experience in helping small and medium businesses generate and convert organic traffic from search engines. Connect with Traian on Google+. He is also the author of the Ecommerce SEO book.