When is it recommended to use a self referencing rel "canonical"?
-
In what type of a situation is it the best type of practice to use a self referencing rel "canonical" tag?
Are there particular practices to be cautious of when using a self referencing rel "canonical" tag?
I see this practice used mainly with larger websites but I can't find any information that really explains when is a good time to make use of this practice for SEO purposes.
Appreciate all feedback.
Thank you in advance.
-
As others have said above, combating scrapers is a big reason, but you're relying on lazy scrapers not removing the tags.
Another reason is to prevent rogue content management systems from attaching unnecessary query strings to URLs, creating pages that can end up loading infinite times under different URLs. A canonical tag in the source file would mean that any number of duplicate pages point back to the original. The same reason goes for sites that have issues with redirecting www / non-www URLs to the correct version, or who deal with the same problem regarding secure / insecure URLs. In all these cases, the canonical tag is a bandaid, not a cure - it would be better to fix the underlying problem of the rogue CMS, incorrect redirection, etc. but the canonical tag (self-referencing) is there if you need it.
Google doesn't seem to have an issue with it, but if you're at all concerned about the other engines, use with care.
-
People do it to stop scarpers, but if your going to write screen scraper it would not be hard to remove canonical tags as well. so I don't think much of the idea.
Bing recommends that you do not use self ref canonicals tags. It could be that a self ref canonical tag may be followed as is alluded to by Bing, meaning that lose a bit of link juice thought the redirect.
-
You may want to just use it on every page.
One good argument for using a self-referencing rel=canonical on every page is to combat scrapers. If they grab the entire code, including the rel=canonical, they are essentially telling the bots that your page is the original, and they'll be much less likely to outrank you for your own content.
Larger sites tend to generate the rel=canonicals automatically for every page, and give you the option to customize it where necessary.
-
What do you mean?
Like on site.com/pagea.htm there is a canonical set to site.com/pagea.htm? No harm in that. You should have a canonical URL whenever you want only one specific version of a URL.
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
-
Rel="self" and what to do with it?
Hey there Mozzers, Another question about a forum issue I encountered. When a forum thread has more than just one page as we all know the best course of action is to use rel="next" rel="prev" or rel="previous" But my forum automatically creates another line in the header called Rel="self" What that does is simple. If i have 3 pages http://www.example.com/article?story=abc1
Intermediate & Advanced SEO | | Angelos_Savvaidis
http://www.example.com/article?story=abc2
http://www.example.com/article?story=abc3 **instead of this ** On the first page, http://www.example.com/article?story=abc1 On the second page, http://www.example.com/article?story=abc2 On the third page, http://www.example.com/article?story=abc3: it creates this On the first page, http://www.example.com/article?story=abc1 So as you can see it creates a url by adding the ?page=1 and names it rel=self which actually gives back a duplicate page because now instead of just http://www.example.com/article?story=abc1 I also have the same page at http://www.example.com/article?story=abc1?page=1 Do i even need rel="self"? I thought that rel="next" and rel="prev" was enough? Should I change that?0 -
Dealing with Redirects and iFrames - getting "product login" pages to rank
One of our most popular products has a very authoritative product page, which is great for marketing purposes, but not so much for current users. When current users search for "product x login" or "product x sign in", instead of getting to the login page, they see the product page - it adds a couple of clicks to their experience, which is not what we want. One of the problems is that the actual login page has barely any content, and the content that it does carry is wrapped around <iframes>. Due to political and security reasons, the web team is reluctant to make any changes to the page, and one of their arguments is that the login page actually ranks #1 for a few other products (at our company, the majority of logins originate from the same domain). </iframes> To add to the challenge - queries that do return the login page as #1 result (for some of our other products) actually do not reference the sign-in domain, but our old domain, which is now a 301 redirect to the sign-in domain. To make that clear - **Google is displaying the origin domain in SERPs, instead of displaying the destination domain. ** The question is - how do we get this popular product's login page to rank higher than the product page for "login" / "sign in" queries? I'm not even sure where we should point links to at this point - the actual sign in domain or the origin domain? I have the redirect chains and domain authority for all of the pages involved, including a few of our major competitors (who follow the same login format), and will be happy to share it privately with a Moz expert. I'd prefer not to make any more information publicly available, so please reach out via private message if you think you can help.
Intermediate & Advanced SEO | | leosaraceni0 -
When you add 10.000 pages that have no real intention to rank in the SERP, should you: "follow,noindex" or disallow the whole directory through robots? What is your opinion?
I just want a second opinion 🙂 The customer don't want to loose any internal linkvalue by vaporizing link value though a big amount of internal links. What would you do?
Intermediate & Advanced SEO | | Zanox0 -
Ecommerce: remove duplicate product pages or use rel=canonical
Say we have a white-widget that is in our white widget collection and also in our wedding widget collection. Currently, we have 3 different URLs for that product (white-widgets/white-widget and wedding-widgets/white-widget and all-widgets/white-widget).We are automatically generating a rel=canonical tag for those individual collection product pages that canonical the original product page (/all-widgets/white-widget). This guide says that is the structure Zappos uses and says "There is an elegance to this approach. However, I would re-visit it today in light of changes in the SEO world."
Intermediate & Advanced SEO | | birchlore
I noticed that Zappos, and many other shops now actually just link back to the parent product page (e.g. If I am in wedding widget section and click on the widget, I go to all-products/white-widget instead of wedding-widgets/white-widget).So my question is:Should we even have these individual product URLs or just get rid of them altogether? My original thought was that it would help SEO for search term "white wedding widget" to have a product URL wedding-widget/white-widget but we won't even be taking advantage of that by using rel=canonical anyway.0 -
What is the best way to optimize/setup a teaser "coming soon" page for a new product launch?
Within the context of a physical product launch what are some ideas around creating a /coming-soon page that "teases" the launch. Ideally I'd like to optimize a page around the product, but the client wants to try build consumer anticipation without giving too many details away. Any thoughts?
Intermediate & Advanced SEO | | GSI0 -
Rel="prev" and rel="next" implementation
Hi there since I've started using semoz I have a problem with duplicate content so I have implemented on all the pages with pagination rel="prev" and rel="next" in order to reduce the number of errors but i do something wrong and now I can't figure out what it is. the main page url is : alegesanatos.ro/ingrediente/ and for the other pages : alegesanatos.ro/ingrediente/p2/ - for page 2 alegesanatos.ro/ingrediente/p3/ - for page 3 and so on. We've implemented rel="prev" and rel="next" according to google webmaster guidelines without adding canonical tag or base link in the header section and we still get duplicate meta title error messages for this pages. Do you think there is a problem because we create another url for each page instead of adding parameters (?page=2 or ?page=3 ) to the main url alegesanatos.ro/ingrediente?page=2 thanks
Intermediate & Advanced SEO | | dan_panait0 -
Schema.org Implementation: "Physician" vs. "Person"
Hey all, I'm looking to implement Schema tagging for a local business and am unsure of whether to use "Physician" or "Person" for a handful of doctors. Though "Physician" seems like it should be the obvious answer, Schema.org states that it should refer to "A doctor's office" instead of a physician. The properties used in "Physician" seem to apply to a physician's practice, and not an actual physician. Properties are sourced from the "Thing", "Place", "Organization", and "LocalBusiness" schemas, so I'm wondering if "Person" might be a more appropriate implementation since it allows for more detail (affiliations, awards, colleagues, jobTitle, memberOf), but I wanna make sure I get this right. Also, I'm wondering if the "Physician" schema allows for properties pulled from the "Person" schema, which I think would solve everything. For reference: http://schema.org/Person http://schema.org/Physician Thanks, everyone! Let me know how off-base my strategy is, and how I might be able to tidy it up.
Intermediate & Advanced SEO | | mudbugmedia0 -
Where does "Pages Similar" link text come from?
When I type in a competitor name (in this case "buycostumes") Google shows several related websites in it's "Pages Similar to..." section at the bottom of the page: My question, can anyone tell me where the text comes from that Google uses as the link. Our competitors have nice branded links and our is just a keyword. I can find nothing on-page that Google is using so it must be coming from someplace off-page, but where?
Intermediate & Advanced SEO | | costume0