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
-
There isn't a direct penalty for having rel="canonical" tags on every page, no, as long as you are correctly utilizing them (i.e. don't set the href of the tag to an invalid or non-existent URL). If there is even the possibility of duplicate content on your website, it is best to use canonical tags.
For websites serving straight HTML files, both http://www.example.com/index.html and http://www.example.com/ likely serve the same content.
If you use a framework like ASP.NET MVC, it would by default return duplicate content for both http://www.example.com/ and http://www.example.com/Home/Index.
Choose one or the other and set your canonical tag to that:
(note: the trailing slash is optional - just be consistent with including it or not)
-
You can use a canonical tag on page A, to point to A, telling that this is the original, teh reason for this is when people scrape your site they will point back home.
i belive thats is what they were getting at
you would only point it at B if B was a duplicate.
-
Ryan - I appreciate your help. My initial thought too was that I could remove it to clean up the code. However, I was unaware that the tag helps with dynamically generated pages - which ours are.
Thank you for your thorough response.
-
as far as i can see josh, the canonical URLs on your site are doing what they should be doing. I havn't looked to deep into it, but it seems like your products all refer back to product category pages, so that is the right way to use them.
-
I have never heard of anyone being penalised for having it on every page. Plus I can't see that ever happening unless it has been implemented incorrectly of course.
-
page A has content about apples. page B has content about bubblegum. Canonical tag states that page B should refer to page A. What is the point of that? all link juice, all ranking potential is passed to page A, even though page B has very different content. So page A MIGHT appear in search results about bubblegum, but page B will not because it is passing all link juice and rank potential to page A about apples. People stop going to page A when looking for bubblegum because it is irrelevant, and bounce rates increase.
Dont think you need documentation to get this. If you have all pages redirecting bots via canonical urls to the SAME page, it is pointless. If you have several article about apples and point them all to page A that is a different story.
-
not sure what you mean here, I have a canonical on every page, I program my sites to dynamicly to do, the reason i do so, is if someone scraps a page, it will have my address in the canonical tag.
I dont know what you mean by not relative to the tag. it just a href, are we talking about the same thing?
rel="canonical" href=http://mydomain.com/>
-
Having canonical tags on pages that don't have any duplicate content is pointless, as it may actually stop you for ranking on keywords specific to pages not relative to the tag.
Please, may you present me a document that assess what are you saying? because it is the first time I hear this thing.
#curious
-
The disadvantage to keeping a canonical tag on a page which does not require it would be, as a rule, you want to present your web page with the least amount of code possible. Unnecessary code causes extra confusion and adds to the processing time of web pages.
I use the canonical tag on all pages, but not everyone agrees. If you would like further support, SEOmoz uses the tag on all pages as well. If you use any CMS, ecommerce software, forum software or any system which generates pages dynamically then I would highly recommend a canonical tag on every page. At times a system will generate pages which you might not be aware of, but a crawler will find.
Sometimes a page will offer a print version, the ability to sort on ascending/descending, and numerous other changes. You might think you only have one version of your page but have many versions which you do not realize exist. A proper canonical tag ensures the correct version of your URL is always offered for indexing, and you avoid duplicate content issues. With that said, if you have a basic html/css/php site and you are 100% confident in your programmer, then it is not necessary.
EDIT: In your case, it seems the canonical tags are performing a necessary function. From your home page I clicked on your featured item and I landed on the following URL:
http://www.nathosp.com/product/r1212_c
You have the identical page offered under another URL: http://www.nathosp.com/product/r1212_c/hotel_towels.
If you were to remove the canonical, you would have duplicate content issues on your site.
-
rel=canonical just passes all link juice from one page to the next, it tells bots to use the page specified in the tag to assess link value and page authority. Having canonical tags on pages that don't have any duplicate content is pointless, as it may actually stop you for ranking on keywords specific to pages not relative to the tag. I would look at it closely or ask the last SEO why they did this before removing them. But by the sounds of it, you dont really need them.
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
-
Can a duplicate page referencing the original page on another domain in another country using the 'canonical link' still get indexed locally?
Hi I wonder if anyone could help me on a canonical link query/indexing issue. I have given an overview, intended solution and question below. Any advice on this query will be much appreciated. Overview: I have a client who has a .com domain that includes blog content intended for the US market using the correct lang tags. The client also has a .co.uk site without a blog but looking at creating one. As the target keywords and content are relevant across both UK and US markets and not to duplicate work the client has asked would it be worthwhile centralising the blog or provide any other efficient blog site structure recommendations. Suggested solution: As the domain authority (DA) on the .com/.co.uk sites are in the 60+ it would risky moving domains/subdomain at this stage and would be a waste not to utilise the DAs that have built up on both sites. I have suggested they keep both sites and share the same content between them using a content curated WP plugin and using the 'canonical link' to reference the original source (US or UK) - so not to get duplicate content issues. My question: Let's say I'm a potential customer in the UK and i'm searching using a keyword phrase that the content that answers my query is on both the UK and US site although the US content is the original source.
Intermediate & Advanced SEO | | JonRayner
Will the US or UK version blog appear in UK SERPs? My gut is the UK blog will as Google will try and serve me the most appropriate version of the content and as I'm in the UK it will be this version, even though I have identified the US source using the canonical link?2 -
URL structure - Page Path vs No Page Path
We are currently re building our URL structure for eccomerce websites. We have seen a lot of site removing the page path on product pages e.g. https://www.theiconic.co.nz/liberty-beach-blossom-shirt-680193.html versus what would normally be https://www.theiconic.co.nz/womens-clothing-tops/liberty-beach-blossom-shirt-680193.html Should we be removing the site page path for a product page to keep the url shorter or should we keep it? I can see that we would loose the hierarchy juice to a product page but not sure what is the right thing to do.
Intermediate & Advanced SEO | | Ashcastle0 -
301 Redirect and Canonical link tag pointing in opposite directions!
I'm working on a site which redirects the non-WWW version to WWW version so, for example https://website.com/page redirects to https://www.website.com/page However, canonical link tags have been set up on the page - pointing back to the non-WWW so for example Q - is this going to cause issues and should the canonical be updated to the same version as the redirect?
Intermediate & Advanced SEO | | SWEMII0 -
How far can I push rel=canonical?
My plan: 3 sites with identical content, yet--wait for it--for every article whose topic is A, the pages on all three sites posting that article will have a rel=canonical tag pointing to Site A. For every article whose topic is B, the pages on all three sites posting that article will have a rel=canonical tag pointing to Site B. So Site A will have some articles about topics A, B, and C. And for pages with articles about A, the rel=canonical will point to the page it's on. Yet for pages with articles about B, the rel=canonical will point to the version of that article on site B. Etc. I have my reasons for planning this, but you can see more or less that I want each site to rank for its niche, yet I want the users at each site to have access to the full spectrum of articles in the shared articles database without having to leave a given site. These would be distinct brands with distinct Whois, directory listings, etc. etc. The content is quality and unique to our company.
Intermediate & Advanced SEO | | TheEspresseo0 -
HTTP Header Canonical Tags
I want to be able to add canonical tags to http headers of individual URL's using .htacess, but I can't find any examples for how to do this. The only example I found was when specifying a file: http://www.seomoz.org/blog/how-to-advanced-relcanonical-http-headers N.B. It's not possible to add regular canonical tags to the of my pages as they're dynamically generated. I was trying to add the following to the .htaccess in order to add a canonical tag in the header of the page http://frugal-father.com/is-finance-in-the-uk-too-london-centric/, but I've checked with Live HTTP headers and the canonical line isn't showing : <files "is-finance-in-the-uk-too-london-centric="" "="">Header add Link "<http: frugal-father.com="">; rel="canonical"'</http:></files> Any ideas?
Intermediate & Advanced SEO | | AndrewAkesson0 -
Canonical Tag Uses Source Title and Meta Data?
When optimising a regional same language micro site within a sub folder of a .com it dawned on me that our use of the hreflang and canonical meta elements will render individual elements such as H1 and title obsolete. As a canonical tag takes the canonical source title and meta right? It would still have value in optimising localised headings though? Appreciate any thoughts, suggestions (o:
Intermediate & Advanced SEO | | 3wh0 -
Removed Internal Rel=NoFollows from power internal page - how long till reflected in Google?
I just started with a client, who has an internal page (not the homepage) that gets about 70% of all total links to the site and ranks #1 for a highly competitive keyword. For some reason, the first set of links, including the first anchor text link to the homepage are nofollowed. I removed the nofollows yesterday. Today, The internal page has already been reindexed in Google showing the followed anchor text link to the homepage Should I expect a jump in link juice pointing to my homepage immediately with a corresponding rankings boost? Homepage is #8 for target term. I hope this makes sense. Any advice would be greatly appreciated.
Intermediate & Advanced SEO | | MattAaron0