Is there an percentage of duplicate content required before you should use a canonical tag?
-
Is there a percentage (approximate or exact) of duplicate content you should have before you use a canonical tag? Similarly how does Google handle canonical tags if the pages aren’t 100% duplicate?
I've added some background and an example below;
- Nike Trainer model 1 – has an overview page that also links to a sub-page about cushioning, one about Gore-Tex and one about breathability.
- Nike Trainer model 2,3,4,5 – have an overview page that also links to sub-pages page about cushioning , Gore-Tex and breathability.
In each of the sub-pages the URL is a child of the parent so a distinct page from each other e.g.
- /nike-trainer/model-1/gore-tex
- /nike-trainer/model-2/gore-tex.
There is some differences in material composition, some different images and of course the product name is referred multiple times. This makes the page in the region of 80% unique.
-
Hi Dan
Thanks for coming back.
Great, so canonicals will be taken into consideration regardless.
Do you have any suggestions on how to mitigate the negative effects of duplicate content if it is unavoidable? Hypothetically. Excluding canonical tags?
Thanks again.
-
There's no exact rule as far as I'm aware, but generally 75-80% unique is a commonly quoted threshold.
The actually amount of duplicate content on a page won't affect how Google handle a canonical tag - either the tag is there or not, just the same as a redirect etc.
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
-
Duplicate content w/ same URLs
I am getting high priority issues for our privacy & terms pages that have the same URL. Why would this show up as duplicate content? Thanks!
Technical SEO | | RanvirGujral0 -
When is Duplicate Content Duplicate Content
Hi, I was wondering exactly when duplicate content is duplicate content? Is it always when it is word-for-word or if it is similar? For example, we currently have an information page and I would like to add a FAQ to the website. There is, however, a crossover with the content and some of it is repeated. However, it is not written word for word. Could you please advise me? Thanks a lot Tom
Technical SEO | | National-Homebuyers0 -
Techniques for diagnosing duplicate content
Buonjourno from Wetherby UK 🙂 Diagnosing duplicate content is a classic SEO skill but I'm curious to know what techniques other people use. Personally i use webmaster tools as illustrated here: http://i216.photobucket.com/albums/cc53/zymurgy_bucket/webmaster-tools-duplicate.jpg but what other techniques are effective? Thanks,
Technical SEO | | Nightwing
David0 -
Dealing with duplicate content
Manufacturer product website (product.com) has an associated direct online store (buyproduct.com). the online store has much duplicate content such as product detail pages and key article pages such as technical/scientific data is duplicated on both sites. What are some ways to lessen the duplicate content here? product.com ranks #1 for several key keywords so penalties can't be too bad and buyproduct.com is moving its way up the SERPS for similar terms. Ideally I'd like to combine the sites into one, but not in the budget right away. Any thoughts?
Technical SEO | | Timmmmy0 -
Duplicate Content Issue
Hi Everyone, I ran into a problem I didn't know I had (Thanks to the seomoz tool) regarding duplicate content. my site is oxford ms homes.net and when I built the site, the web developer used php to build it. After he was done I saw that the URL's looking like this "/blake_listings.php?page=0" and I wanted them like this "/blakes-listings" He changed them with no problem and he did the same with all 300 pages or so that I have on the site. I just found using the crawl diagnostics tool that I have like 3,000 duplicate content issues. Is there an easy fix to this at all or does he have to go in and 301 Redirect EVERY SINGLE URL? Thanks for any help you can give.
Technical SEO | | blake-766240 -
Duplicate Content Issue
Hello, We have many pages in our crawler report that are showing duplicate content. However, the content is not duplicateon the pages. It is somewhat close, but different. I am not sure how to fix the problem so it leaves our report. Here is an example. It is showing these as duplicate content to each other. www.soccerstop.com/c-119-womens.aspx www.soccerstop.com/c-120-youth.aspx www.soccerstop.com/c-124-adult.aspx Any help you could provide would be most appreciated. I am going through our crawler report and resolving issues, and this seems to be big one for us with lots in the report, but not sure what to do about it. Thanks
Technical SEO | | SoccerStop
James0 -
Using robots.txt to deal with duplicate content
I have 2 sites with duplicate content issues. One is a wordpress blog. The other is a store (Pinnacle Cart). I cannot edit the canonical tag on either site. In this case, should I use robots.txt to eliminate the duplicate content?
Technical SEO | | bhsiao0 -
Appropriate Use of Rel Canonical
When using the On page report card I get a critical error on Rel Canonical Im not sure if I have understood this right but I think that my problem is that I own a Norwegian Domain name which is www.danske-båten.no This domain works great in norwegian, but I get problems with english (foreign) browsers. My english domain name is http://www.danske-båten.no. When you buy a domain name with the letter Å you get a non norwegian domain name as well. (dont quite get the tecnical aspect of it) Så when I publish a page (using wordpress if that means anything) I get this message: Appropriate Use of Rel Canonical Moderate fix <dl> <dt>Canonical URL</dt> <dd>"http://www.danske-båten.no/ferge-oslo-københavn/"</dd> <dt>Explanation</dt> <dd>If the canonical tag is pointing to a different URL, engines will not count this page as the reference resource and thus, it won't have an opportunity to rank. Make sure you're targeting the right page (if this isn't it, you can reset the target above) and then change the canonical tag to reference that URL.</dd> <dt>Recommendation</dt> <dd>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.</dd> <dd>So What to do to fix this?
Technical SEO | | stlastla
</dd> </dl>0