Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Is DOCTYPE important for SEO?
-
Hello fellow Mozzers.
I am just having a brief look at a potential clients website before speaking to them tomorrow and whilst looking at the source I noticed that they don't appear to have a clear definition for their Doctype.
All the have at the top of each page is
I have to admit that Doctypes aren't my strong point but I know that they are normally slightly more descriptive than this.
Can this have any effect on rankings? or is this just an issue for W3C validation?
Thanks

-
If it is an HTML 5 page that should be just fine as it is the HTML 5 doctype tag.
Check out the info here: http://www.w3schools.com/html5/tag_doctype.asp
It might cause trouble with really old browsers, but if they have that going I would hope they have already thought about the reasons for and against using it

EDIT: even better link: http://www.w3.org/TR/html5-diff/#doctype
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Gallery maintenance and the effect on SEO
Basically we get a lot of users uploading photos as part of their review, but many photos aren't moderated into our pages and therefore are never displayed. Things like selfies rather than photos of the product or just random google images that are completely unrelated to our products or services. Is there any benefit in cleaning up the gallery since some images we don't use are just sat there in admin?
Intermediate & Advanced SEO | | Fubra
when a page loads, would it be quicker if we had less content in the gallery? With our SEO hat on.
or does it not matter since it's not loading that content (photos) anyway?0 -
How important is admin-ajax.php?
Hi there! It's been a long time since I last did a technical audit of a site. I've currently playing with the 'fetch as google' tool to find out if we're blocking anything vital. The site is based on Wordpress, and after a recent hacking incident, a previous SEO moved the login portal from domain.com/wp-admin/ to domain.com/pr3ss/wp-admin/ - to stop people finding it. Fair enough. But they then updated the robots.txt file to look like this: User-agent: *
Intermediate & Advanced SEO | | Muhammad-Isap
Disallow: /pr3ss/wp-admin/ Now, some pages are trying to draw on theme elements like: http://www.domain.com/pr3ss/wp-admin/admin-ajax.php
http://www.domain.com/pr3ss/wp-content/themes/bestpracticegroup/images/column_wrapper_bg.png And are naturally being blocked (not that this seems to affect the way pages are rendering in Google's eyes) A good SEO friend of mine has suggested allowing the theme folder, and any sub folders where this becomes an issue. What are your thoughts? Is it even worth disallowing the /pr3ss/wp-admin/ path? Cheers guys and gals! All the best, John. I've found a couple of the theme's0 -
Are backlinks the most important factor in SEO?
I have had an agency state that "Backlinks are the most important factor in SEO". That is how they are justifying their strategy of approaching bloggers. I believe there are a lot more factors than that including Target Market definition, Keyword identification an build content based on these factors. What's everyone's thoughts?
Intermediate & Advanced SEO | | AndySalmons0 -
SEO site Review
Does anyone have suggestions on places that provide in depth site / analytics reviews for SEO?
Intermediate & Advanced SEO | | Gordian0 -
Using WP All Import csv import plugin for wordpress to daily update products on large ecommerce site. Category naming and other issues.
We have just got an automated solution working to upload about 4000 products daily to our site. We get a CSV file from the wholesalers server each day and the way they have named products and categories is not ideal. Although most of the products remain the same (don't need to be over written) Some will go out of stock or prices may change etc. Problem is we have no control over the csv file so we need to keep the catagories they have given us. Might be able to create new catgories and have products listed under multiple categories? If anyone has used wp all import or has knoledge in this area please let me know. I have plenty more questions but this should start the ball rolling! Thanks in advance mozzers
Intermediate & Advanced SEO | | weebro0 -
What should I cover in a SEO proposal ?
What should I cover in a SEO proposal? Is there any sample SEO Proposal template in SEOMoz?
Intermediate & Advanced SEO | | kashyaplakkad1 -
Does capitalization matter for SEO?
Two places capitalization comes into play: (1) on-page use (title, h1, body text, img alt text, etc) (2) external anchor text I didn't think it mattered from Google's point of view for on-page usage (is this correct?) but I notice that OpenSiteExplorer' s 'anchor text distribution' tab shows different counts for the same keyword if it's capitalized in different ways (eg seomoz.org is listed separate from SEOmoz.org). Is that just OSE or does Google treat the keyword/phrase different based on its capitalization, too? And if so, then should I be creating external links to my site with the 'regular' and 'Capitalized' versions of my key phrases?
Intermediate & Advanced SEO | | scanlin1