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.
Two different canonical tags on one page
-
Due to an error, some of my pages now have two canonical tags on them. One is correct and the other goes to a nonsense URL (404 page).
I know I should ideally remove the incorrect ones, but it's a big manual job. Are they doing any harm? Can I just leave them there and let Google figure it out?
The correct ones are higher up in the code. Will this make a difference?
Any help appreciated.
-
Unfortunately, what Google can do and what they actually do can really vary. If you're mixing signals and doubling up the canonicals, the odds that they'll get it right are pretty low, in my experience. I think it's worth the fix, if these are traffic-generating pages.
-
You should certainly fix this. You don't want google having to guess what you are trying to tell them. For the most part they will probably get it right, especially in your case with the 404s. But if this is occurring too frequently then they may begin to ignore your canonicals all together. Or worse, you may loose some google trust.
I'd put this on my fix it list.
-
Thanks Scott. It's only wrong on a few hundred pages and they're all quite deep. If it were wrong on the important pages I'd fix it.
-
You should change it, I'm no canonical expert, but the whole point of having it is to tell google how you want it to show, ex. www.yoursite.com or yoursite.com. If your not going to change it for all of your pages then at least do it for your home page as this is the one that usually gets the most attention.
-
Well that's good news. Think I'll just leave them there then. Thanks!
-
This is stright from Google Webmasters:
"What happens if rel="canonical" points to a non-existent page? Or if more than one page in a set is specified as the canonical version?
We'll do our best to algorithmically determine an appropriate canonical page, just as we've done in the past."
http://support.google.com/webmasters/bin/answer.py?hl=en&answer=139394
Hope that helps

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
-
Should I "no-index" two exact pages on Google results?
Hello everyone, I recently started a new wordpress website and created a static homepage. I noticed that on Google search results, there are two different URLs landing on same content page. I've attached an image to explain what I saw. Should I "no-index" the page url? Google url.JPG In this picture, the first result is the homepage and I try to rank for that page. The last result is landing on same content with different URL. So, should I no-index last result as shown in image?
Technical SEO | | amanda59640 -
What is the correct Canonical tag on m.site?
We have 2 separate sites for desktop (www.example.com) and mobile (m.example.com) As per the guideline, we have added Rel=alternate tag on www.example.com to point to mobile URL(m.example.com) and Rel=canonical tag on m.example.com to point to Desktop site(www.example.com).However, i didn't find any guideline on what canonical tag we should add ifFor Desktop sitewww.example.com/PageA - has a canonical tag to www.example.com/PageBOn this page, we have a Rel=alternate tag m.example.com/pageAWhat will be the canonical we should add for the mobile version of Page Am.example.com/PageA - Canonical tag point to www.example.com/PageA -or www.example.com/PageB?Kalpesh
Technical SEO | | kguard0 -
Can I set a canonical tag to an anchor link?
I have a client who is moving to a one page website design. So, content from the inner pages is being condensed in to sections on the 'home' page. There will be a navigation that anchor links to each relevant section. I am wondering if I should leave the old pages and use rel=canonical to point them to their relevant sections on the new 'home' page rather than 301 them. Thoughts?
Technical SEO | | Vizergy0 -
Canonical for duplicate pages in ecommerce site and the product out of stock
I’m an SEO for an ecommerce site that sells shoes I have duplicate pages for different colors of the same product (unique URL for each color), Conventionally I have added canonical tags for each page, which direct to a specific product URL My question is what happens when a product which the googlbot is direct to, is out of stock but is still listed in the canonical tag ?
Technical SEO | | shoesonline0 -
Canonical Tag when using Ajax and PhantomJS
Hello, We have a site that is built using an AJAX application. We include the meta fragment tag in order to get a rendered page from PhantomJS. The URL that is rendered to google from PhantomJS then is www.oursite.com/?escaped_fragment= In the SERP google of course doesnt include the hashtag in the URL. So my question, with this setup, do i still need a canonical tag and if i do, would the canonical tag be the escaped fragment URL or the regular URL? Much Appreciated!
Technical SEO | | RevanaDigitalSEO0 -
Duplicate content on Product pages for different product variations.
I have multiple colors of the same product, but as a result I'm getting duplicate content warnings. I want to keep these all different products with their own pages, so that the color can be easily identified by browsing the category page. Any suggestions?
Technical SEO | | bobjohn10 -
Duplicate title-tags with pagination and canonical
Some time back we implemented the Google recommendation for pagination (the rel="next/prev"). GWMT now reports 17K pages with duplicate title-tags (we have about 1,1m products on our site and about 50m pages indexed in Google) As an example we have properties listed in various states and the category title would be "Properties for Sale in [state-name]". A paginated search page or browsing a category (see also http://searchengineland.com/implementing-pagination-attributes-correctly-for-google-114970) would then include the following: The title for each page is the same - so to avoid the duplicate title-tags issue, I would think one would have the following options: Ignore what Google says Change the canonical to http://www.site.com/property/state.html (which would then only show the first XX results) Append a page number to the title "Properties for Sale in [state-name] | Page XX" Have all paginated pages use noindex,follow - this would then result in no category page being indexed Would you have the canonical point to the individual paginated page or the base page?
Technical SEO | | MagicDude4Eva2 -
Should there be a canonical tag on my 404 error page?
In my crawl diagnostics, I notice some 4xx client errors. They are appearing for pages that no longer exist, so I'm not sure what the problem is. Shouldn't they just be dealt as 404's? Anyway, on closer inspection I noticed that my 404 error page contains a canonical tag which points to the missing page. Could this be the issue? Is it a good idea to remove the canonical tag from this error page? Thanks.
Technical SEO | | Leighm0