Getting rid of duplicate content with rel=canonical
-
This may sound like a stupid question, however it's important that I get this 100% straight.
A new client has nearly 6k duplicate page titles / descriptions. To cut a long story short, this is mostly the same page (or rather a set of pages), however every time Google visits these pages they get a different URL. Hence the astronomical number of duplicate page titles and descriptions.
Now the easiest way to fix this looks like canonical linking. However, I want to be absolutely 100% sure that Google will then recognise that there is no duplicate content on the site. Ideally I'd like to 301 but the developers say this isn't possible, so I'm really hoping the canonical will do the job.
Thanks.
-
Thank you both, much appreciated. Their rankings have suffered in the last two weeks and this coincides with their developers creating all this duplicate content - let's see if this fixes that issue!
Thanks again.
-
Hi mj1984,
The canonical tag is your only option here. The problem with duplicate content is really about control:
(i) Controlling Link Juice (past + future)
(ii) Controlling the targeted landing page within your campaign
Google will devalue certain identical pages, but they will always favour one. They do not, as far as I am aware, devalue all content that is duplicated (including the original) - So your concern isn't that your site is being devalued, simpliciter (often an immediate unwarranted concern). It is that Google will select one duplicate page and favour that above the others.
The canonical tag exists for you to control this.
So, will Google recognise there is no duplicate content?. It should, it might not, but I wouldn't worry about this. For the canonical tags that it does pick up (& eventually) - you can be confident that the page you want to rank, will be the one ranking.
-
To me this sounds like a clear-cut case of a need for the canonical tag.
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
-
How to use rel canonical?
Hi, I am having some questions about this and I think you can help me on this. Here I have the example of my problem: pagination: Suppose that I have a new with 2 pages http://www.espectador.com/noticias/208907/fernando-pereira-encuesta-de-cifra-prendio-una-lucecita-amarilla-en-el-pit-cnt you can access the first page by different ways: www.espectador.com/1v4_contenido.php?m=&id=250419&ipag=1 http://www.espectador.com/1v4_contenido.php?m=&id=250419 http://www.espectador.com/noticias/250419/alvaro-vega-fa-creo-que-cosmo-fue-usada-por-bqb-para-evitar-una-subasta-a-la-baja-y-asi-quedar-con-las-manos-libres Same meta descr, same body with different URLs. Can I use rel canonical in the file 1v4_contenido.php that point to the friendly url? <link rel="<a class="attribute-value">canonical</a>" href="[http://www.espectador.com/noticias/250419/alvaro-vega-fa-creo-que-cosmo-fue-usada-por-bqb-para-evitar-una-subasta-a-la-baja-y-asi-quedar-con-las-manos-libres](view-source:http://www.espectador.com/noticias/250419/alvaro-vega-fa-quotcreo-que-cosmo-fue-usada-por-bqb-para-evitar-una-subasta-a-la-bajaquot-y-asi-quotquedar-con-las-manos-libresquot)"/> do I have a loop here? The rel canonical can goes in the page 1? Thanks
Technical SEO | | informatica8100 -
URL query considered duplicate content?
I have a Magento site. In order to reduce duplicate content for products of the same style but with different colours I have combined them on to 1 product page. I would like to allow the pictures to be dynamic, i.e. allow a user to search for a colour and all the products that offer that colour appear in the results, but I dont want the default product image shown but the product image for that colour applying to the query. Therefore to do this I have to append a query string to the end of the URL to produce this result: www.website.com/category/product-name.html?=red My question is, will the query variations then be picked up as duplicate content: www.website.com/category/product-name.html www.website.com/category/product-name.html?=red www.website.com/category/product-name.html?=yellow Google suggest it has contingencies in its algorithm and I will not be penalised: http://googlewebmastercentral.blogspot.co.uk/2007/09/google-duplicate-content-caused-by-url.html But other sources suggest this is not accurate. Note the article was written in 2007.
Technical SEO | | BlazeSunglass0 -
Rel=canonical for similar (not exact) content?
Hi all, We have a software product and SEOMOZ tools are currently reporting duplicate content issues in the support section of the website. This is because we keep several versions of our documentation covering the current version and previous 3-4 versions as well. There is a fair amount of overlap in the documentation. When a new version comes out, we simply copy the documentation over, edit it as necessary to address changes and create new pages for the new functionality. This means there is probably an 80% or so overlap from one version to the next. We were previously blocking Google (using robots.txt) from accessing previous versions of the sofware documentation, but this is obviously not ideal from an SEO perspective. We're in the process of linking up all the old versions of the documenation to the newest version so we can use rel=canonical to point to the current version. However, the content isn't all exact duplicates. Will we be penalized by Google because we're using rel=canonical on pages that aren't actually exact duplicates? Thanks, Darren.
Technical SEO | | dgibbons0 -
Problem with Rel Canonical
Background: We check to make sure that IF you use canonical URL tags, it points to the right page. If the canonical tag points to a different URL, engines will not count this page as the reference resource and thus, it won't have an opportunity to rank. If you've not made this page the rel=canonical target, change the reference to this URL. NOTE: For pages not employing canonical URL tags, this factor does not apply. Clearly I am doing something wrong here, how do I check my various pages to see where the problem lies and how do I go about fixing it?
Technical SEO | | SallySerfas0 -
If two websites pull the same content from the same source in a CMS, does it count as duplicate content?
I have a client who wants to publish the same information about a hotel (summary, bullet list of amenities, roughly 200 words + images) to two different websites that they own. One is their main company website where the goal is booking, the other is a special program where that hotel is featured as an option for booking under this special promotion. Both websites are pulling the same content file from a centralized CMS, but they are different domains. My question is two fold: • To a search engine does this count as duplicate content? • If it does, is there a way to configure the publishing of this content to avoid SEO penalties (such as a feed of content to the microsite, etc.) or should the content be written uniquely from one site to the next? Any help you can offer would be greatly appreciated.
Technical SEO | | HeadwatersContent0 -
Rel="canonical" and rewrite
Hi, I'm going to describe a scenario on one of my sites, I was wondering if someone could tell me what is the correct use of rel="canonical" here. Suppose I have a rewrite rule that has a rule like this: RewriteRule ^Online-Games /main/index.php So, in the index file, do I set the rel="canonical" to Online-Games or /main/index.php? Thanks.
Technical SEO | | webtarget0 -
Duplicate Content For Trailing Slashes?
I have several website in campaigns and I consistently get flagged for duplicate content and duplicate page titles from the domain and the domain/ versions of the sites even though they are properly redirected. How can I fix this?
Technical SEO | | RyanKelly0 -
Duplicate content
This is just a quickie: On one of my campaigns in SEOmoz I have 151 duplicate page content issues! Ouch! On analysis the site in question has duplicated every URL with "en" e.g http://www.domainname.com/en/Fashion/Mulberry/SpringSummer-2010/ http://www.domainname.com/Fashion/Mulberry/SpringSummer-2010/ Personally my thoughts are that are rel = canonical will sort this issue, but before I ask our dev team to add this, and get various excuses why they can't I wanted to double check i am correct in my thinking? Thanks in advance for your time
Technical SEO | | Yozzer0