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.
Removing duplicate content
-
Due to URL changes and parameters on our ecommerce sites, we have a massive amount of duplicate pages indexed by google, sometimes up to 5 duplicate pages with different URLs.
1. We've instituted canonical tags site wide.
2. We are using the parameters function in Webmaster Tools.
3. We are using 301 redirects on all of the obsolete URLs
4. I have had many of the pages fetched so that Google can see and index the 301s and canonicals.
5. I created HTML sitemaps with the duplicate URLs, and had Google fetch and index the sitemap so that the dupes would get crawled and deindexed.
None of these seems to be terribly effective. Google is indexing pages with parameters in spite of the parameter (clicksource) being called out in GWT. Pages with obsolete URLs are indexed in spite of them having 301 redirects. Google also appears to be ignoring many of our canonical tags as well, despite the pages being identical.
Any ideas on how to clean up the mess?
-
Where this is appearing the most is on cross domain canonicals. We have duplicate content across 2 websites, and we've canonicaled some pages from Site A to Site B, and some from Site B to Site A. In theory, pages that were canonicaled to the other domain should be deindexed. When I run a rankings report, I see pages for the wrong domain ranking, a month later. They are pages with parameters, or old URLs that we've changed. It's like a game of whack a mole. Every time we get a page deindexed, a duplicate with a different parameter takes its place. And this is in spite of calling out these parameters in GWT.
What I imagine is happening is that we have several URLs for the same page indexed. When Google crawls our site, it is correctly canonicaling the page it crawls. In the rankings, however, Google is probably pulling a duplicate page out of its index, and ranking it without crawling it. If it was crawling it, Google would see the canonical tag, and not rank it. So we have an ongoing battle to get Google to crawl the page it just pulled out of its index to see the the canonical tag.
The reason for all this is that when a page cross domain canonicals correctly, the rankings for the duplicate page on the other site goes up dramatically. As long as Google keeps ranking the wrong pages, we don't get the rankings bump on the other site.
-
Are you basing this on a site: search? It's fairly common for URLs to appear in a site: search that otherwise will not appear for any actual searches. Are the undesirable versions of the URLs getting any search traffic?
-
Yes, as Patrick said, surprisingly often something like this is a result of a simple oversight because we have been looking at the same code over and over...
Do you have access to Screaming Frog? You could crawl your site and see whether redirects/canonicals are behaving as you expected.
Have you taken a look at the html of one of the incorrectly indexed pages when it is loaded in your browser? Can you see the canonical? If you try going to a redirected page, does it redirect? [I know--way to obvious, but sometimes it is good to start at the beginning again when we can't root out an issue.]
Another culprit in these cases can be internal links. Do you link internally using any of the undesirable URLs? That can send a message to Google that those URLs are still in play. Again, you can use Screaming Frog to find those strings.
-
It sounds like part of the problem may be the sitemaps you're sending. By including duplicates in a sitemap, you're basically telling Google that each version of the page is valid. I would remove them and resubmit a sitemap with only the canonical versions you want indexed and see if that helps.
-
Hi there
Are you sure you are using all of the tools above properly? Not saying you're not but people make mistakes and it's just something to look into.
When did you implement all of the changes? Was it recently or was it a long time ago?
How is your organic traffic and rankings? Did you check if you have a manual action at all?
Let me know - thanks!
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
-
How can I avoid duplicate content for a new landing page which is the same as an old one?
Hello mozers! I have a question about duplicate content for you... One on my clients pages have been dropping in search volume for a while now, and I've discovered it's because the search term isn't as popular as it used to be. So... we need to create a new landing page using a more popular search term. The page which is losing traffic is based on the search query "Can I put a solid roof on my conservatory" this only gets 0-10 searches per month according to the keyword explorer tool. However, if we changed this to "replacing conservatory roof with solid roof" this gets up to 500 searches per month. Muuuuch better! The issue is, I don't want to close down and re-direct the old page because it's got a featured snippet and sits in position 1. So I'd like to create another page instead... however, as the two are effectively the same content, I would then land myself in a duplicate content issue. If I were to put a rel="canonical" tag in the original "can I put a solid roof...." page but say the master page is now the new one, would that get around the issue?
Intermediate & Advanced SEO | | Virginia-Girtz0 -
SEM Rush & Duplicate content
Hi SEMRush is flagging these pages as having duplicate content, but we have rel = next etc implemented: https://www.key.co.uk/en/key/brand/bott https://www.key.co.uk/en/key/brand/bott?page=2 Or is it being flagged as they're just really similar pages?
Intermediate & Advanced SEO | | BeckyKey0 -
Country Code Top Level Domains & Duplicate Content
Hi looking to launch in a new market, currently we have a .com.au domain which is geo-targeted to Australia. We want to launch in New Zealand which is ends with .co.nz If i duplicate the Australian based site completely on the new .co.nz domain name, would i face duplicate content issues from a SEO standpoint?
Intermediate & Advanced SEO | | jayoliverwright
Even though it's on a completely separate country code. Or is it still advised tosetup hreflang tag across both of the domains? Cheers.0 -
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 | | ajiabs0 -
Duplicate content on recruitment website
Hi everyone, It seems that Panda 4.2 has hit some industries more than others. I just started working on a website, that has no manual action, but the organic traffic has dropped massively in the last few months. Their external linking profile seems to be fine, but I suspect usability issues, especially the duplication may be the reason. The website is a recruitment website in a specific industry only. However, they posts jobs for their clients, that can be very similar, and in the same time they can have 20 jobs with the same title and very similar job descriptions. The website currently have over 200 pages with potential duplicate content. Additionally, these jobs get posted on job portals, with the same content (Happens automatically through a feed). The questions here are: How bad would this be for the website usability, and would it be the reason the traffic went down? Is this the affect of Panda 4.2 that is still rolling What can be done to resolve these issues? Thank you in advance.
Intermediate & Advanced SEO | | iQi0 -
Real Estate MLS listings - Does Google Consider duplicate content?
I have a real estate website. The site has all residential properties for sale in a certain State (MLS property listings). These properties also appear on 100's of other real estate sites, as the data is pulled from a central place where all Realtors share their listings. Question: will having these MLS listings indexed and followed by Google increase the ratio of duplicate vs original content on my website and thus negatively affect ranking for various keywords? If so, should I set the specific property pages as "no index, no follow" so my website will appear to have less duplicate content?
Intermediate & Advanced SEO | | khi50 -
Is SEOmoz.org creating duplicate content with their CDN subdomain?
Example URL: http://cdn.seomoz.org/q/help-with-getting-no-conversions Canonical is a RELATIVE link, should be an absolute link pointing to main domain: http://www.seomoz.org/q/help-with-getting-no-conversions <link href='[/q/help-with-getting-no-conversions](view-source:http://cdn.seomoz.org/q/help-with-getting-no-conversions)' rel='<a class="attribute-value">canonical</a>' /> 13,400 pages indexed in Google under cdn subdomain go to google > site:http://cdn.seomoz.org https://www.google.com/#hl=en&output=search&sclient=psy-ab&q=site:http%3A%2F%2Fcdn.seomoz.org%2F&oq=site:http%3A%2F%2Fcdn.seomoz.org%2F&gs_l=hp.2...986.6227.0.6258.28.14.0.0.0.5.344.3526.2-10j2.12.0.les%3B..0.0...1c.Uprw7ko7jnU&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&fp=97577626a0fb6a97&biw=1920&bih=936
Intermediate & Advanced SEO | | irvingw1 -
Could you use a robots.txt file to disalow a duplicate content page from being crawled?
A website has duplicate content pages to make it easier for users to find the information from a couple spots in the site navigation. Site owner would like to keep it this way without hurting SEO. I've thought of using the robots.txt file to disallow search engines from crawling one of the pages. Would you think this is a workable/acceptable solution?
Intermediate & Advanced SEO | | gregelwell0