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
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
-
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 -
Does Google read dynamic canonical tags?
Does Google recognize rel=canonical tag if loaded dynamically via javascript? Here's what we're using to load: <script> //Inject canonical link into page head if (window.location.href.indexOf("/subdirname1") != -1) { canonicalLink = window.location.href.replace("/kapiolani", ""); } if (window.location.href.indexOf("/subdirname2") != -1) { canonicalLink = window.location.href.replace("/straub", ""); } if (window.location.href.indexOf("/subdirname3") != -1) { canonicalLink = window.location.href.replace("/pali-momi", ""); } if (window.location.href.indexOf("/subdirname4") != -1) { canonicalLink = window.location.href.replace("/wilcox", ""); } if (canonicalLink != window.location.href) { var link = document.createElement('link'); link.rel = 'canonical'; link.href = canonicalLink; document.head.appendChild(link); } script>
Technical SEO | | SoulSurfer80 -
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 -
Are image pages considered 'thin' content pages?
I am currently doing a site audit. The total number of pages on the website are around 400... 187 of them are image pages and coming up as 'zero' word count in Screaming Frog report. I needed to know if they will be considered 'thin' content by search engines? Should I include them as an issue? An answer would be most appreciated.
Technical SEO | | MTalhaImtiaz0 -
Is the Authority of Individual Pages Diluted When You Add New Pages?
I was wondering if the authority of individual pages is diluted when you add new pages (in Google's view). Suppose your site had 100 pages and you added 100 new pages (without getting any new links). Would the average authority of the original pages significantly decrease and result in a drop in search traffic to the original pages? Do you worry that adding more pages will hurt pages that were previously published?
Technical SEO | | Charlessipe0 -
Two META Robots tags on a page - which will win?
Hi, Does anybody know which meta-robots tag will "win" if there is more than one on a page? The situation:
Technical SEO | | jmueller
our CMS is not very flexible and so we have segments of META-Tags on the page that originate from templates.
Now any author can add any meta-tag from within his article-editor.
The logic delivering the pages does not care if there might be more than one meta-robots tag present (one from template, one from within the article). Now we could end up with something like this: Which one will be regarded by google & co?
First?
Last?
None? Thanks a lot,
Jan0 -
Error: Missing Meta Description Tag on pages I can't find in order to correct
This seems silly, but I have errors on blog URLs in our WordPress site that I don't know how to access because they are not in our Dashboard. We are using All in One SEO. The errors are for blog archive dates, authors and just simply 'blog'. Here are samples: http://www.fateyes.com/2012/10/
Technical SEO | | gfiedel
http://www.fateyes.com/author/gina-fiedel/
http://www.fateyes.com/blog/ Does anyone know how to input descriptions for pages like these?
Thanks!!0 -
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