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.
Adding a Canonical Tag to each page referencing itself?
-
Hey Mozers!
I've noticed that on www.Zappos.com they have a Canonical tag on each page referencing it self. I have heard that this is a popular method but I dont see the point in canon tagging a page to its self.
Any thoughts?
-
Forgive me if this is a silly question, but does this mean you would need to go and identify all the urls with extra parameters, and add canonical tag pointing to the primary url?
Coz if so, that would be an extremly labourious task, no? Some of my duplicate issues, have 50+ urls that are being counted as 'duplicates'.
There must be a better way, hence, I fear this must be a silly question...
-
The self-referencing canonical tags should only be for your actual preferred URLs. So if www.testwebsite.com/duplicate is a duplicate because of parameters (for example), then no, it should not have the self-referencing canonical tag - it should have a canonical tag pointing to the preferred URL should (www.testwebsite.com/ in this case, which would have the self-ref tag).
Zappos example:
- http://www.zappos.com/beyond-yoga-women-shirts-tops~1 (self-ref canonical tag)
- http://www.zappos.com/beyond-yoga-women-shirts-tops~1#!/beyond-yoga-women-shirts-tops/CKvXARDL1wFSAv0eegLgBIIBAukjwAEB4gIFGAECCg8.zso (canonical tag points to unfiltered page)
If www.testwebsite.com/duplicate is a static page that you want indexed, but that has the same content as www.testwebsite.com/, then the solution is updating/adding content to be unique (then applying the self-ref canonical tags to both URLs which are now unique).
Make sense?
-
I've not come across any reason ever that would give cause to be concerned about losing Page Authority by having a page canonical to itself.
-
Well it was more so a concern for me applying this method to my own site more so than a concern for Zappos getting flagged lol
Im curious to know would it do anything at all to the page Authority if you have it Canon tagged to itself?
-
No need to be concerned. Aside from all the really well documented best practices on canonicals, in your original question you've spotted at least one big site that does this. They pay the SEO big bucks and rank well.
-
I would assume that by having each page canon tag itself your basically telling google "Hey I am aware that this is a duplicate but treat it as its own page and not as a version of another". My concern is by doing so your losing potential Page Authority
example:
www.testwebsite.com ---Canonionical--- www.testwebsite.com
www.testwebsite.com/duplicate ---Canonical --- www.testwebsite.com/duplicate
-
Yes this is a good idea as it's a catch all for URLs that might include tracking URL parameters, or other parameters that don't affect the page content. When there are no tracking parameters, it's going to be more development and testing work to hide the canonical, when having it there doesn't cause any issues. It's also quite a brutal but effective catch all if your page was accidentally accessible via other URLs - e.g. non-www or https.
George
-
Moz.com does this as well and you may also see an "Insight" in your Moz Analytics account recommending site-wide implementation 'to prevent any unforeseen duplicate content issues.' I have started following this practice since it really can't hurt & sometimes dup content pops up in the weirdest, most 'unforeseen' ways.
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 (or if) to apply re canonical tags to Shopify?
Anyone familiar with Shopify will understand the problems of their directory structure. Every time you add a product to a 'collection' it essentially creates a duplicate. For example... https://www.domain.com/products/product-slim-regular-bikini may also appear as: https://www.domain.com/collections/all/products/product-slim-regular-bikini https://www.domain.com/collections/new-arrivals/products/product-slim-regular-bikini https://www.domain.com/collections/bikinis/products/product-slim-regular-bikini etc, etc It's not uncommon to have up to six duplicates of each product. So my question is twofold: Firstly, should I worry about this from an SEO point of view? I understand the desire to minimise potential duplicate content issues and also in focussing the 'juice' on just one page per product. But I also planned on trying to build the authority of the collection pages. If I request Google not to index the product pages which link off the collections, does this not devalue these collections pages? Secondly, I understand the correct way to fix these is using 'rel canonical' tags, but I'm not clear about HOW to actually do this. Shopify support has not been very helpful. They have provided two different instructions, so just added to the confusion (see below). Shopify instruction #1: Add the following to the theme.liquid file... <title><br />{{ page_title }}{% if current_tags %} – tagged "{{ current_tags | join: ', ' }}"{% endif %}{% if current_page != 1 %} – Page {{ current_page }}{% endif %}{% unless page_title contains shop.name %} – {{ shop.name }}{% endunless %}<br /></title>
Intermediate & Advanced SEO | | muzzmoz
{% if page_description %} {% endif %} Shopify instruction #2: Add the following to each individual product page... So, can anyone help clarify: The best strategic approach to this inherent SEO issue with Shopify (besides moving to another platform!)? and If 'rel canonical' tags is the way to go, exactly where and how to apply them? Regards, Murray1 -
Marking Ads As Ads
In marking paid ads as "advertisement" for the sake of Google organic, if you have a block of small ads, do you have to mark each and every one as an advertisement? For instance, let's say you have a block of small ads in the right column... mark each one or just at the top or what? Thanks!
Intermediate & Advanced SEO | | 945010 -
Ecommerce Site homepage , Is it okay to have Links as H2 Tags as that is relevant to the page ?
Hi All, I have a Rental site and I am bit confused with how best do my H Tags on my homepage I know the H1 is the most important, Then H2 Tags and so on.. and that these tags should really be titles for content. However, I have a few categories (links) on my homepage so I am wondering if I could put these as H2 Tags given that it is relevant to the page . H3 Tags will my News and Guides etc , H4 Tags will the whats on the footer. I am attached a made up screenshot of what I propose for my homepage if someone could please give it a quick look , it would be very much appreciated. I have looked at what some competitors do a lot of them don't seem to have h2's etc but I know it's an important factor for rankings etc. Many thanks Pete dJSFQwI
Intermediate & Advanced SEO | | PeteC120 -
How long takes to a page show up in Google results after removing noindex from a page?
Hi folks, A client of mine created a new page and used meta robots noindex to not show the page while they are not ready to launch it. The problem is that somehow Google "crawled" the page and now, after removing the meta robots noindex, the page does not show up in the results. We've tried to crawl it using Fetch as Googlebot, and then submit it using the button that appears. We've included the page in sitemap.xml and also used the old Google submit new page URL https://www.google.com/webmasters/tools/submit-url Does anyone know how long will it take for Google to show the page AFTER removing meta robots noindex from the page? Any reliable references of the statement? I did not find any Google video/post about this. I know that in some days it will appear but I'd like to have a good reference for the future. Thanks.
Intermediate & Advanced SEO | | fabioricotta-840380 -
Lowercase VS. Uppercase Canonical tags?
Hi MOZ, I was hoping that someone could help shed some light on an issue I'm having with URL structure and the canonical tag. The company I work for is a distributor of electrical products and our E-commerce site is structured so that our URL's (specifically, our product detail page URL's) include a portion (the part #) that is all uppercase (e.g: buy/OEL-Worldwide-Industries/AFW-PG-10-10). The issue is that we have just recently included a canonical tag in all of our product detail pages and the programmer that worked on this project has every canonical tag in lowercase instead of uppercase. Now, in GWT, I'm seeing over 20,000-25,000 "duplicate title tags" or "duplicate descriptions". Is this an issue? Could this issue be resolved by simply changing the canonical tag to reflect the uppercase URL's? I'm not too well versed in canonical tags and would love a little insight. Thanks!
Intermediate & Advanced SEO | | GalcoIndustrial0 -
Should I use rel=canonical on similar product pages.
I'm thinking of using rel=canonical for similar products on my site. Say I'm selling pens and they are al very similar. I.e. a big pen in blue, a pack of 5 blue bic pens, a pack of 10, 50, 100 etc. should I rel=canonical them all to the best seller as its almost impossible to make the pages unique. (I realise the best I realise these should be attributes and not products but I'm sure you get my point) It seems sensible to have one master canonical page for bic pens on a site that has a great description video content and good images plus linked articles etc rather than loads of duplicate looking pages. love to hear thoughts from the Moz community.
Intermediate & Advanced SEO | | mark_baird0 -
Dynamic pages - ecommerce product pages
Hi guys, Before I dive into my question, let me give you some background.. I manage an ecommerce site and we're got thousands of product pages. The pages contain dynamic blocks and information in these blocks are fed by another system. So in a nutshell, our product team enters the data in a software and boom, the information is generated in these page blocks. But that's not all, these pages then redirect to a duplicate version with a custom URL. This is cached and this is what the end user sees. This was done to speed up load, rather than the system generate a dynamic page on the fly, the cache page is loaded and the user sees it super fast. Another benefit happened as well, after going live with the cached pages, they started getting indexed and ranking in Google. The problem is that, the redirect to the duplicate cached page isn't a permanent one, it's a meta refresh, a 302 that happens in a second. So yeah, I've got 302s kicking about. The development team can set up 301 but then there won't be any caching, pages will just load dynamically. Google records pages that are cached but does it cache a dynamic page though? Without a cached page, I'm wondering if I would drop in traffic. The view source might just show a list of dynamic blocks, no content! How would you tackle this? I've already setup canonical tags on the cached pages but removing cache.. Thanks
Intermediate & Advanced SEO | | Bio-RadAbs0 -
Any penalty for having rel=canonical tags on every page?
For some reason every webpage of our website (www.nathosp.com) has a rel=canonical tag. I'm not sure why the previous SEO manager did this, but we don't have any duplicate content that would require a canonical tag. Should I remove these tags? And if so, what's the advantage - or disadvantage of leaving them in place? Thank you in advance for your help. -Josh Fulfer
Intermediate & Advanced SEO | | mhans1