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
-
WordPress Sub-directory for SEO
Hi There, I'm working on a WordPress site that includes a premium content blog with approx 900 posts. As part of the project, those 900 posts and other membership functionality will be moved from the main site to another site built specifically for content/membership. Ideally, we want the existing posts to remain on the root domain to avoid a loss in link juice/domain authority. We initially began setting up a WordPress Multisite using the sub-directory option. This allows for the main site to be at www.website.com and the secondary site to be at www.website.com/secondary. Unfortunately, the themes and plugins we need for the platform do not play nicely with WordPress Multisite, so we started seeking a new solution, and, discovered that a second instance of WordPress can be installed in a subdirectory on the server. This would give us the same subdirectory structure while bypassing WordPress Multisite and instead, having two separate single-site installs. Do you foresee any issues with this WordPress subdirectory install? Does Google care/know these are two separate WordPress installs and do we risk losing any link juice/domain authority?
Intermediate & Advanced SEO | | HimalayanInstitute0 -
Server update to ipv6, SEO consequences
Hi all, I read the article from 2014 on MOZ regarding ipv6.
Intermediate & Advanced SEO | | AdenaSEO
https://moz.com/blog/ipv6-cblocks-and-seo Our technical department is about to change our server from ipv4 to ipv6.
Are there any things we have to consider regarding SEO / rankings / duplicate content etc.. with this transition? I hope you have a little spare time to answer this question. Regards,
Tom1 -
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 -
Merging Pages and SEO
Hi, We are redesigning our website the following way: Before: Page A with Content A, Page B with Content B, Page C with Content C, etc
Intermediate & Advanced SEO | | viatrading1
e.g. one page for each Customer Returns, Overstocks, Master Case, etc
Now: Page D with content A + B + C etc.
e.g. one long page containing all Product Conditions, one after the other So we are merging multiples pages into one.
What is the best way to do so, so we don't lose traffic? (or we lose the minimum possible) e.g. should we 301 Redirect A/B/C to D...?
Is it likely that we lose significant traffic with this change? Thank you,0 -
SEO value of affiliate external links
There are websites that have linked to my site. Whenever I hover over link I see my direct website URL and I am not seeing "no follow" when viewing source code so I assume these are passing link juice. However when I click on link it directs briefly to shareasale (affiliate account) in web address bar, but then quickly directs back to my website URL as directed. I was curious if these good links I am acquiring truly pass juice or since they briefly pass through an affiliate site if that cancels or dilutes the link juice. Also I am noticing when inspecting element that after the HREF it says class="external-link" I am just not sure if my link building efforts are being ruined by having an affiliate account running.I did not tell them I had one. I guess they are searching to see that I have one and trying to make a few extra commission dollars.
Intermediate & Advanced SEO | | nchachula0 -
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 -
Link Age as SEO factor?
Hi Guys
Intermediate & Advanced SEO | | VividLime
I have a client who ranks well within a competitive sector of the travel industry. They are planning CMS move which will involve changing from .cfm to .aspx We will be doing the standard redirects etc However Matt's statement here on 301 redirects got me thinking
http://www.youtube.com/watch?v=zW5UL3lzBOA&t=0m24s He says that basically you loose a bit of page rank when you do a 301 redirect. Now, we will be potentially redirecting 1000s of links and my thinking is 'a lot of a little, adds up to a lot' In other words, 1000s of redirects may have a big enough impact to loose some rankings in a very competitive and aggressive space. So recommended that we contact the sites who has the link highest value and ask them to manually change the links from cfm to aspx. This will then mean that there are no loss value as with a 301 redirect. -But now I have another dilemma which I'm unsure about. So the main question:
Is link age factor in rankings ? If I update any links, this will make said link new to Google, so if link age is a factor, would this also lessen the value passed initially?0 -
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