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.
Duplicate Content www vs. non-www and best practices
-
I have a customer who had prior help on his website and I noticed a 301 redirect in his .htaccess
Rule for duplicate content removal : www.domain.com vs domain.com
RewriteCond %{HTTP_HOST} ^MY-CUSTOMER-SITE.com [NC]
RewriteRule (.*) http://www.MY-CUSTOMER-SITE.com/$1 [R=301,L,NC]The result of this rule is that i type MY-CUSTOMER-SITE.com in the browser and it redirects to www.MY-CUSTOMER-SITE.com
I wonder if this is causing issues in SERPS. If I have some inbound links pointing to www.MY-CUSTOMER-SITE.com and some pointing to MY-CUSTOMER-SITE.com, I would think that this rewrite isn't necessary as it would seem that Googlebot is smart enough to know that these aren't two sites.
-----Can you comment on whether this is a best practice for all domains?
-----I've run a report for backlinks. If my thought is true that there are some pointing to www.www.MY-CUSTOMER-SITE.com and some to the www.MY-CUSTOMER-SITE.com, is there any value in addressing this? -
_If I have some inbound links pointing to www.MY-CUSTOMER-SITE.com and some pointing to MY-CUSTOMER-SITE.com, I would think that this rewrite isn't necessary as it would seem that Googlebot is smart enough to know that these aren't two sites. _
Absolutely NOT, unfortunately. Search engines specifically consider these two versions of the URLS to be two totally different sites. The redirect rule you currently have is specifically in place to correct this problem so the two versions of your site (in the eyes of the engines) aren't competing with each other.
The previous developer knew what he was doing. Leave the redirect as-is. Just be careful that all links you create use the primary version of the URL - you'll retain a bit more "link juice" that way than having them go through the redirect. (i.e. always write links as www.my-customer-site.com/whatever for links in content, menus, incoming links where possible)
Paul
P.S. For proof that search engines consider those URLs different sites, Google's own Webmaster Tools has a setting where you can tell Google which version of the site URL you want to be primary. Much better to do this with a proper 301-redirect though so that you can tell ALL search engines, not just Google.
-
-----Can you comment on whether this is a best practice for all domains?
Yes, it is.
-----I've run a report for backlinks. If my thought is true that there are some pointing to www.www.MY-CUSTOMER-SITE.com and some to the www.MY-CUSTOMER-SITE.com, is there any value in addressing this?
You shouldn't worry about that at all. 301's are just fine. They don't only redirect visitors, search engines like Google also follow them to pass authority signals to the redirected page.
-
You want to commit to one and put a 301 on the other. Googlebot should be smart enough, but it isn't really. Some things aren't best to be left to chance.
Here's the Moz 301 redirect article: http://moz.com/learn/seo/redirection
Edit: Here's another article about www.mysite.com vs mysite.com http://www.stepforth.com/resources/web-marketing-knowledgebase/non-www-redirect/#.UlbGl1Cko2s
-
Ideally one version of the site should redirect to the other version using a 301 to transfer any link juice from one version of the domain to the other. In an issue where both versions have links pointing to them, the best solution is to see which version has the highest domain authority and the most links and use that as your preferred domain.
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 Best Practices regarding Robots.txt disallow
I cannot find hard and fast direction about the following issue: It looks like the Robots.txt file on my server has been set up to disallow "account" and "search" pages within my site, so I am receiving warnings from the Google Search console that URLs are being blocked by Robots.txt. (Disallow: /Account/ and Disallow: /?search=). Do you recommend unblocking these URLs? I'm getting a warning that over 18,000 Urls are blocked by robots.txt. ("Sitemap contains urls which are blocked by robots.txt"). Seems that I wouldn't want that many urls blocked. ? Thank you!!
Intermediate & Advanced SEO | | jamiegriz0 -
Best Permalinks for SEO - Custom structure vs Postname
Good Morning Moz peeps, I am new to this but intending on starting off right! I have heard a wealth of advice that the "post name" permalink structure is the best one to go with however... i am wondering about a "custom structure" combing the "post name" following the below example structure: Www.professionalwarrior.com/bodybuilding/%postname/ Where "professional" and "bodybuilding" is my focus/theme/keywords of my blog that i want ranked. Thanks a mill, RO
Intermediate & Advanced SEO | | RawkingOut0 -
Duplicate content on URL trailing slash
Hello, Some time ago, we accidentally made changes to our site which modified the way urls in links are generated. At once, trailing slashes were added to many urls (only in links). Links that used to send to
Intermediate & Advanced SEO | | yacpro13
example.com/webpage.html Were now linking to
example.com/webpage.html/ Urls in the xml sitemap remained unchanged (no trailing slash). We started noticing duplicate content (because our site renders the same page with or without the trailing shash). We corrected the problematic php url function so that now, all links on the site link to a url without trailing slash. However, Google had time to index these pages. Is implementing 301 redirects required in this case?1 -
What are the best practices for geo-targeting by sub-folders?
My domain is currently targeting the US, but I'm building out sub-folders that will need to geo-target France, England, and Spain. Each country will have it's own sub-folder, and professionally translated (domain.com/france). Other than the hreflang tags, what are other best practices I can implement? Can Google Webmaster tools geo-target by subfolder? Any suggestions would be appreciated. Thanks Justin
Intermediate & Advanced SEO | | Rhythm_Agency0 -
Duplicate Content through 'Gclid'
Hello, We've had the known problem of duplicate content through the gclid parameter caused by Google Adwords. As per Google's recommendation - we added the canonical tag to every page on our site so when the bot came to each page they would go 'Ah-ha, this is the original page'. We also added the paramter to the URL parameters in Google Wemaster Tools. However, now it seems as though a canonical is automatically been given to these newly created gclid pages; below https://www.google.com.au/search?espv=2&q=site%3Awww.mypetwarehouse.com.au+inurl%3Agclid&oq=site%3A&gs_l=serp.3.0.35i39l2j0i67l4j0i10j0i67j0j0i131.58677.61871.0.63823.11.8.3.0.0.0.208.930.0j3j2.5.0....0...1c.1.64.serp..8.3.419.nUJod6dYZmI Therefore these new pages are now being indexed, causing duplicate content. Does anyone have any idea about what to do in this situation? Thanks, Stephen.
Intermediate & Advanced SEO | | MyPetWarehouse0 -
Image URLs - best practice
Hi - I'm assuming image URL best practice follows same principles as non image URLs (not too many files and so on) - I notice alot of web devs putting photos in subdomains, so wonder if I'm missing something (I usually avoid subdomains like the plague)!
Intermediate & Advanced SEO | | McTaggart1 -
Best practice for expandable content
We are in the middle of having new pages added to our website. On our website we will have a information section containing various details about a product, this information will be several paragraphs long. we were wanting to show the first paragraph and have a read more button to show the rest of the content that is hidden. Whats googles view on this, is this bad for seo?
Intermediate & Advanced SEO | | Alexogilvie0 -
Domain Name Change - Best Practices?
Good day guys, We got a restaurant that is changing its name and domain. However they are keeping the same server location, same content and same pages (we are just changing the logo on the website). It just has to go a new domain. We don't want to lose the value of the current site, and we want to avoid any duplicate penalties. Could you please advise of the best practices of doing a domain name change? Thank you.
Intermediate & Advanced SEO | | Michael-Goode0