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
-
SEO on dynamic website
Hi. I am hoping you can advise. I have a client in one of my training groups and their site is a golf booking engine where all pages are dynamically created based on parameters used in their website search. They want to know what is the best thing to do for SEO. They have some landing pages that Google can see but there is only a small bit of text at the top and the rest of the page is dynamically created. I have advised that they should create landing pages for each of their locations and clubs and use canonicals to handle what Google indexes.Is this the right advice or should they noindex? Thanks S
Intermediate & Advanced SEO | | bedynamic0 -
Lightboxes and SEO
Do lightboxes (AKA popup boxes when you click "learn more" type CTAs) have any negative effect on SEO? We are looking at revamping our sites to have more of a tiled approach, and a lightbox with summary content popping out with additional CTAs, directing to pages with more information or free trial pages. Is there any downside to this approach from an organic perspective? is there anything specific to keep in mind when creating these if not?
Intermediate & Advanced SEO | | Chris81980 -
Do Page Anchors Affect SEO?
Hi everyone, I've been researching for the past hour and I cannot find a definitive answer anywhere! Can someone tell me if page anchors affect SEO at all? I have a client that has 9 page anchors on one landing page on their website - which means if you were to scroll through their website, the page is really really long! I always thought that by using page anchors instead of sending users through to a dedicated landing page, ranking for those keywords makes it harder because a search spider will read all the content on that landing page and not know how to rank for individual keywords? Am I wrong? The client in particular sells furniture, so on their landing page they have page anchors that jump the user down to "tables" or "chairs" or "lighting" for example. You can then click on one of the product images listed in that section of the page anchor and go through to an individual product page. Can anyone shed any light on this? Thanks!
Intermediate & Advanced SEO | | Virginia-Girtz1 -
Advanced SEO - What would you do after you run out of keywords?
Hello! Our company has been growing in terms of traffic and ranking well for a couple of years but we are now kind of stagnating because we just don't know what to do next. We have a good blog - and with our blogs, we have been targeting all major keywords with their related keywords as a bucket. - "keyword theme / page" for a long time. But it seems we now don't have any major keyword theme to write about. What is worse is that we don't see any traffic growth since 2014 September. (although we added many good blogs) So what would do you when you run out of keywords? or keyword themes? Would you just keep pumping in more blogs and hope that you get more clicks? or at some point, you just don't care about keywords and write whatever relevant to your site? Wouldn't it hurt our site if we create similar keyword themed pages? (like regurgitating our keywords?) or even same keyword targeting pages? You must have similar experience if you are an owner of a niche site. Can you please share your experience with this kind of headaches? Thank you and look forward to your comments.
Intermediate & Advanced SEO | | joony3 -
Is .ME domain is effective in SEO ?
I am always listening about TLD. com. org .net but what about the .me domain. Can this will be effective in SEO. Can i able to beat down my competitors, if i choose .me . I also have a .com or other TLD option but if i am making my name than .me is for me but i need your suggestion for the seo purpose. Is there really domain affective in term of SEO.
Intermediate & Advanced SEO | | pnb5670 -
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 -
How important are sitemap errors?
If there aren't any crawling / indexing issues with your site, how important do thing sitemap errors are? Do you work to always fix all errors? I know here: http://www.seomoz.org/blog/bings-duane-forrester-on-webmaster-tools-metrics-and-sitemap-quality-thresholds Duane Forrester mentions that sites with many 302's 301's will be punished--does any one know Googe's take on this?
Intermediate & Advanced SEO | | nicole.healthline0 -
SEO from Godaddy How Good is it?
http://www.godaddy.com/search-engine/seo-services.aspx?ci=44163 it said "Includes Standard Search Engine Visibility to Improve Search Rankings" it begs for question... Search Engine Visibility??? Improve SERP?!?!!? is it really that good? O.o; or have i successfully been eaten my promotional messages? Can anyone with experience with them share some information with me ? 🙂 (The price tag is mighty interesting)
Intermediate & Advanced SEO | | IKT0