Skip to content
    Moz logo Menu open Menu close
    • Products
      • Moz Pro
      • Moz Pro Home
      • Moz Local
      • Moz Local Home
      • STAT
      • Moz API
      • Moz API Home
      • Compare SEO Products
      • Moz Data
    • Free SEO Tools
      • Domain Analysis
      • Keyword Explorer
      • Link Explorer
      • Competitive Research
      • MozBar
      • More Free SEO Tools
    • Learn SEO
      • Beginner's Guide to SEO
      • SEO Learning Center
      • Moz Academy
      • SEO Q&A
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Digital Marketers
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • The Moz Story
      • New Releases
    • Log in
    • Log out
    • Products
      • Moz Pro

        Your all-in-one suite of SEO essentials.

      • Moz Local

        Raise your local SEO visibility with complete local SEO management.

      • STAT

        SERP tracking and analytics for enterprise SEO experts.

      • Moz API

        Power your SEO with our index of over 44 trillion links.

      • Compare SEO Products

        See which Moz SEO solution best meets your business needs.

      • Moz Data

        Power your SEO strategy & AI models with custom data solutions.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • Free SEO Tools
      • Domain Analysis

        Get top competitive SEO metrics like DA, top pages and more.

      • Keyword Explorer

        Find traffic-driving keywords with our 1.25 billion+ keyword index.

      • Link Explorer

        Explore over 40 trillion links for powerful backlink data.

      • Competitive Research

        Uncover valuable insights on your organic search competitors.

      • MozBar

        See top SEO metrics for free as you browse the web.

      • More Free SEO Tools

        Explore all the free SEO tools Moz has to offer.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • Learn SEO
      • Beginner's Guide to SEO

        The #1 most popular introduction to SEO, trusted by millions.

      • SEO Learning Center

        Broaden your knowledge with SEO resources for all skill levels.

      • On-Demand Webinars

        Learn modern SEO best practices from industry experts.

      • How-To Guides

        Step-by-step guides to search success from the authority on SEO.

      • Moz Academy

        Upskill and get certified with on-demand courses & certifications.

      • MozCon

        Save on Early Bird tickets and join us in London or New York City

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      Find your plan
    • Blog
    • Why Moz
      • Digital Marketers

        Simplify SEO tasks to save time and grow your traffic.

      • Small Business Solutions

        Uncover insights to make smarter marketing decisions in less time.

      • Agency Solutions

        Earn & keep valuable clients with unparalleled data & insights.

      • Enterprise Solutions

        Gain a competitive edge in the ever-changing world of search.

      • The Moz Story

        Moz was the first & remains the most trusted SEO company.

      • New Releases

        Get the scoop on the latest and greatest from Moz.

      Surface actionable competitive intel
      New Feature

      Surface actionable competitive intel

      Learn More
    • Log in
      • Moz Pro
      • Moz Local
      • Moz Local Dashboard
      • Moz API
      • Moz API Dashboard
      • Moz Academy
    • Avatar
      • Moz Home
      • Notifications
      • Account & Billing
      • Manage Users
      • Community Profile
      • My Q&A
      • My Videos
      • Log Out

    The Moz Q&A Forum

    • Forum
    • Questions
    • Users
    • Ask the Community

    Welcome to the Q&A Forum

    Browse the forum for helpful insights and fresh discussions about all things SEO.

    1. Home
    2. SEO Tactics
    3. Intermediate & Advanced SEO
    4. Duplicate Content www vs. non-www and best practices

    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

    Intermediate & Advanced SEO
    5
    5
    6837
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • EnvoyWeb
      EnvoyWeb last edited by

      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?

      1 Reply Last reply Reply Quote 0
      • ThompsonPaul
        ThompsonPaul last edited by

        _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.

        1 Reply Last reply Reply Quote 3
        • RohitPalit
          RohitPalit last edited by

          -----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.

          1 Reply Last reply Reply Quote 0
          • Oren.
            Oren. last edited by

            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

            1 Reply Last reply Reply Quote 2
            • RebekahMay
              RebekahMay last edited by

              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.

              1 Reply Last reply Reply Quote 0
              • 1 / 1
              • First post
                Last post

              Got a burning SEO question?

              Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


              Start my free trial


              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.

              • See all categories

              Related Questions

              • teddef

                Best practice for deindexing large quantities of pages

                We are trying to deindex a large quantity of pages on our site and want to know what the best practice for doing that is. For reference, the reason we are looking for methods that could help us speed it up is we have about 500,000 URLs that we want deindexed because of mis-formatted HTML code and google indexed them much faster than it is taking to unindex them unfortunately. We don't want to risk clogging up our limited crawl log/budget by submitting a sitemap of URLs that have "noindex" on them as a hack for deindexing. Although theoretically that should work, we are looking for white hat methods that are faster than "being patient and waiting it out", since that would likely take months if not years with Google's current crawl rate of our site.

                Intermediate & Advanced SEO | | teddef
                0
              • viatrading1

                Faceted Navigation URLs Best Practices

                Hi, We are developing new Products Pages with faceted filters. You can see it here: https://www.viatrading.com/wholesale-products/ We have a feature allowing to Order By and Group By, which alters the order of all products. There will also be the option to view Products as a table, which will contain same products but with different design and maybe slightly different content of each product. All this will happen without changing the URL, https://www.viatrading.com/all/ Is this the best practice? Thanks,

                Intermediate & Advanced SEO | | viatrading1
                0
              • cinzia09

                Same product in different categories and duplicate content issues

                Hi,I have some questions related to duplicate content on e-commerce websites. 1)If a single product goes to multiple categories (eg. A black elegant dress could be listed in two categories like "black dresses" and "elegant dresses") is it considered duplicate content even if the product url is unique? e.g www.website.com/black-dresses/black-elegant-dress duplicated> same content from two different paths www.website.com/elegant-dresses/black-elegant-dress duplicated> same content from two different paths www.website.com/black-elegant-dress unique url > this is the way my products urls look like Does google perceive this as duplicated content? The path to the content is only one, so it shouldn't be seen as duplicated content, though the product is repeated in different categories.This is the most important concern I actually have. It is a small thing but if I set this wrong all website would be affected and thus penalised, so I need to know how I can handle it. 2- I am using wordpress + woocommerce. The website is built with categories and subcategories. When I create a product in the product page backend is it advisable to select  just the lowest subcategory or is it better to select both main category and subcategory in which the product belongs? I usually select the subcategory alone.  Looking forward to your reply and suggestions. thanks

                Intermediate & Advanced SEO | | cinzia09
                1
              • ajiabs

                Duplicate content due to parked domains

                I have a main ecommerce website with unique content and decent back links. I had few domains parked on the main website as well specific product pages. These domains had some type in traffic. Some where exact product names.  So main main website www.maindomain.com had domain1.com , domain2.com parked on it. Also had domian3.com parked on www.maindomain.com/product1. This caused lot of duplicate content issues. 12 months back, all the parked domains were changed to 301 redirects. I also added all the domains to google webmaster tools. Then removed main directory from google index. Now realize few of the additional domains are indexed and causing duplicate content. My question is what other steps can I take to avoid the duplicate content for my my website 1. Provide change of address in Google search console. Is there any downside in providing change of address pointing to a website? Also domains pointing to a specific url , cannot provide change of address 2. Provide a remove page from google index request in Google search console. It is temporary and last 6 months. Even if the pages are removed from Google index, would google still see them duplicates? 3. Ask google to fetch each url under other domains and submit to google index. This would hopefully remove the urls under domain1.com and doamin2.com eventually due to 301 redirects. 4. Add canonical urls for all pages in the main site. so google will eventually remove content from doman1 and domain2.com due to canonical links. This wil take time for google to update their index 5. Point these domains elsewhere to remove duplicate contents eventually. But it will take time for google to update their index with new non duplicate content. Which of these options are best best to my issue and which ones are potentially dangerous? I would rather not to point these domains elsewhere. Any feedback would be greatly appreciated.

                Intermediate & Advanced SEO | | ajiabs
                0
              • BobGW

                PDF for link building - avoiding duplicate content

                Hello, We've got an article that we're turning into a PDF. Both the article and the PDF will be on our site. This PDF is a good, thorough piece of content on how to choose a product. We're going to strip out all of the links to our in the article and create this PDF so that it will be good for people to reference and even print. Then we're going to do link building through outreach since people will find the article and PDF useful. My question is, how do I use rel="canonical" to make sure that the article and PDF aren't duplicate content? Thanks.

                Intermediate & Advanced SEO | | BobGW
                0
              • gXeSEO

                Is an RSS feed considered duplicate content?

                I have a large client with satellite sites. The large site produces many news articles and they want to put an RSS feed on the satellite sites that will display the articles from the large site. My question is, will the rss feeds on the satellite sites be considered duplicate content? If yes, do you have a suggestion to utilize the data from the large site without being penalized? If no, do you have suggestions on what tags should be used on the satellite pages? EX: wrapped in tags? THANKS for the help. Darlene

                Intermediate & Advanced SEO | | gXeSEO
                0
              • 360eight-SEO

                News sites & Duplicate content

                Hi SEOMoz I would like to know, in your opinion and according to 'industry' best practice, how do you get around duplicate content on a news site if all news sites buy their "news" from a central place in the world? Let me give you some more insight to what I am talking about. My client has a website that is purely focuses on news. Local news in one of the African Countries to be specific. Now, what we noticed the past few months is that the site is not ranking to it's full potential. We investigated, checked our keyword research, our site structure, interlinking, site speed, code to html ratio you name it we checked it. What we did pic up when looking at duplicate content is that the site is flagged by Google as duplicated, BUT so is most of the news sites because they all get their content from the same place. News get sold by big companies in the US (no I'm not from the US so cant say specifically where it is from) and they usually have disclaimers with these content pieces that you can't change the headline and story significantly, so we do have quite a few journalists that rewrites the news stories, they try and keep it as close to the original as possible but they still change it to fit our targeted audience - where my second point comes in. Even though the content has been duplicated, our site is more relevant to what our users are searching for than the bigger news related websites in the world because we do hyper local everything. news, jobs, property etc. All we need to do is get off this duplicate content issue, in general we rewrite the content completely to be unique if a site has duplication problems, but on a media site, im a little bit lost. Because I haven't had something like this before. Would like to hear some thoughts on this. Thanks,
                Chris Captivate

                Intermediate & Advanced SEO | | 360eight-SEO
                0
              • Creode

                Duplicate content on ecommerce sites

                duplicate content

                I just want to confirm something about duplicate content. On an eCommerce site, if the meta-titles, meta-descriptions and product descriptions are all unique, yet a big chunk at the bottom (featuring "why buy with us" etc) is copied across all product pages, would each page be penalised, or not indexed, for duplicate content? Does the whole page need to be a duplicate to be worried about this, or would this large chunk of text, bigger than the product description, have an effect on the page. If this would be a problem, what are some ways around it? Because the content is quite powerful, and is relavent to all products... Cheers,

                Intermediate & Advanced SEO | | Creode
                0

              Get started with Moz Pro!

              Unlock the power of advanced SEO tools and data-driven insights.

              Start my free trial
              Products
              • Moz Pro
              • Moz Local
              • Moz API
              • Moz Data
              • STAT
              • Product Updates
              Moz Solutions
              • SMB Solutions
              • Agency Solutions
              • Enterprise Solutions
              Free SEO Tools
              • Domain Authority Checker
              • Link Explorer
              • Keyword Explorer
              • Competitive Research
              • Brand Authority Checker
              • Local Citation Checker
              • MozBar Extension
              • MozCast
              Resources
              • Blog
              • SEO Learning Center
              • Help Hub
              • Beginner's Guide to SEO
              • How-to Guides
              • Moz Academy
              • API Docs
              About Moz
              • About
              • Team
              • Careers
              • Contact
              Why Moz
              • Case Studies
              • Testimonials
              Get Involved
              • Become an Affiliate
              • MozCon
              • Webinars
              • Practical Marketer Series
              • MozPod
              Connect with us

              Contact the Help team

              Join our newsletter
              Moz logo
              © 2021 - 2025 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
              • Accessibility
              • Terms of Use
              • Privacy

              Looks like your connection to Moz was lost, please wait while we try to reconnect.