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        Canonical and Alternate Advice

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        • JH_OffLimits
          JH_OffLimits Subscriber last edited by

          At the moment for most of our sites, we have both a desktop and mobile version of our sites. They both show the same content and use the same URL structure as each other. The server determines whether if you're visiting from either device and displays the relevant version of the site.

          We are in a predicament of how to properly use the canonical and alternate rel tags. Currently we have a canonical on mobile and alternate on desktop, both of which have the same URL because both mobile and desktop use the same as explained in the first paragraph.

          Would the way of us doing it at the moment be correct?

          1 Reply Last reply Reply Quote 3
          • BlueprintMarketing
            BlueprintMarketing @Nigel_Carr last edited by

            That would normally be the case but not tonight.

            LOL, I am picking up a lot of the UK Q&A I will be at BrightonSEO and search love London if any of you guys will be in the area I'd love to grab a pint?

            sincerely,

            Thomas

            1 Reply Last reply Reply Quote 1
            • Nigel_Carr
              Nigel_Carr @BlueprintMarketing last edited by

              The reason we answered 'quickly' by the way is because we are in the UK -  you were still in bed lol! 🙂

              BlueprintMarketing 1 Reply Last reply Reply Quote 1
              • Nigel_Carr
                Nigel_Carr @JH_OffLimits last edited by

                There is only ONE URL that is the point.

                If they share the same URL then you only have one page of code so ONE canonical

                Regards

                Nigel

                1 Reply Last reply Reply Quote 0
                • BlueprintMarketing
                  BlueprintMarketing @Nigel_Carr last edited by

                  Sorry Nigel

                  was not trying to make this more complicated was just trying to make sure that we were all on the same page.

                  FYI if you need a method of adding the rel canonical to your website quickly you can use Google tag manager or if you want to add to the header

                  https://support.stackpath.com/hc/en-us/articles/360001445283-EdgeRules-Adding-a-Canonical-Header

                  Nigel_Carr 1 Reply Last reply Reply Quote 0
                  • JH_OffLimits
                    JH_OffLimits Subscriber @BlueprintMarketing last edited by

                    So a self referencing canonical on both mobile and desktop versions of the site, regardless if they chuck out two version with the same content?

                    Nigel_Carr 1 Reply Last reply Reply Quote 1
                    • Nigel_Carr
                      Nigel_Carr @JH_OffLimits last edited by

                      Hi JH

                      I'm sure Thomas means well with his multiple complicated posts but all of this is totally unnecessary.

                      Both sites are serving the same URL

                      You can't put a rel=alternative because there is nothing to point to.

                      Just put a self-referencing canonical. I said that 2 hours ago!

                      That is all.

                      Regards Nigel

                      BlueprintMarketing 1 Reply Last reply Reply Quote 2
                      • BlueprintMarketing
                        BlueprintMarketing @JH_OffLimits last edited by

                        Use a self-referencing canonical

                        https://blog.seoprofiler.com/google-recommend-self-referencing-canonical-tags/

                        Please let me know if you want me to remove the image below?

                        you can use this one if needed http://bseo.io/c1vMSv

                        mgkic5E.png

                        JH_OffLimits 1 Reply Last reply Reply Quote 0
                        • JH_OffLimits
                          JH_OffLimits Subscriber @BlueprintMarketing last edited by

                          I've been told to pass on a URL, thanks for your help Thomas!

                          https://www.stag.com/

                          BlueprintMarketing Nigel_Carr 2 Replies Last reply Reply Quote 1
                          • BlueprintMarketing
                            BlueprintMarketing @JH_OffLimits last edited by

                            Hey man I understand is a big deal

                            could you do me a huge favor and run your site through screaming frog SEO spider send me a couple of pages with the domains whited out so I can tell you 100% what to do in this situation because I am basing this on what you have told me and honestly I would like to look at what a tool can show me and that will tell me what I need to do.

                            Or you can tell me if the mobile version of the site hit's Google's index yes or no?

                            respectfully,

                            Tom

                            JH_OffLimits 1 Reply Last reply Reply Quote 0
                            • JH_OffLimits
                              JH_OffLimits Subscriber @BlueprintMarketing last edited by

                              So both mobile and desktop require a self referencing canonical(in both headers)?

                              Sorry for the questions, just need to make sure! It's a very touchy subject!

                              BlueprintMarketing 1 Reply Last reply Reply Quote 0
                              • BlueprintMarketing
                                BlueprintMarketing @BlueprintMarketing last edited by

                                The single self-referencing URL will work.

                                1 Reply Last reply Reply Quote 0
                                • BlueprintMarketing
                                  BlueprintMarketing @JH_OffLimits last edited by

                                  What URLs are you  using with the “alternate” tag on?

                                  You said 
                                  ”1. We have multiple brand sites, that have a similar setup. They all have mobile and desktop versions of the sites running on the same URL, both of which show the same content.

                                  2. The server determines whether if you're on a desktop or mobile devices using the header information, and points the user to the site relevant files for the given device.”

                                  thats Dynamic serving same URL

                                  Dynamic serving is a setup where the server responds with different HTML (and CSS) on the same URL depending on which user agent requests the page (mobile, tablet, or desktop).

                                  that would NOT give you the mobile or m.example.com & www.example.com different URLs

                                  **But If you do have  a different  m.example.com & www.example.com  URLs you should use this code or  XML site maps **

                                  for different URLs use this:

                                  Annotations in the HTML

                                  On the desktop page (http://www.example.com/page-1), add the following annotation:

                                  <linkrel="alternate"media="only screen="" and="" (max-width:="" 640px)"<="" span="">href="http://m.example.com/page-1"></linkrel="alternate"media="only>

                                  On the mobile page (http://m.example.com/page-1), the required annotation should be:

                                  <linkrel="canonical"href="http: www.example.com="" page-1"=""></linkrel="canonical"href="http:>

                                  This rel="canonical" tag on the mobile URL pointing to the desktop page is required.

                                  Or

                                  Annotations in sitemaps

                                  We support including the rel="alternate"annotation for the desktop pages in sitemaps like this:

                                  <urlsetxmlns="http: www.sitemaps.org="" schemas="" sitemap="" 0.9"<="" span="">xmlns:xhtml="http://www.w3.org/1999/xhtml">

                                  <loc>http://www.example.com/page-1/</loc>
                                  <xhtml:linkrel="alternate"media="only screen="" and="" (max-width:="" 640px)"<="" span="">href="http://m.example.com/page-1"/></xhtml:linkrel="alternate"media="only></urlsetxmlns="http:>

                                  You should have the same URL on mobile and desktop

                                  You should have the same rel canonical tag on your URLs unless and this is a big unless you're talking about using Google AMP?

                                  If the URL you want to be indexed is the same URL point everything to that URL if that makes it easier to understand.

                                  respectfully,

                                  Tom

                                  BlueprintMarketing JH_OffLimits 2 Replies Last reply Reply Quote 0
                                  • JH_OffLimits
                                    JH_OffLimits Subscriber @BlueprintMarketing last edited by

                                    Just to confirm, are we suppose to have a canonical on desktop and mobile or just desktop?

                                    This would mean removing the alternate?

                                    Want to confirm everything before iterating this across to others.

                                    We are not using AMP, just a standard site setup.

                                    BlueprintMarketing 1 Reply Last reply Reply Quote 1
                                    • BlueprintMarketing
                                      BlueprintMarketing @BlueprintMarketing last edited by

                                      Unless you are using AMP?

                                      Then you would add

                                      Linking pages with

                                      In order to solve this problem, we add information about the AMP page to the non-AMP page and vice versa, in the form of  tags in the .

                                      Add the following to the non-AMP page:

                                      <link rel="amphtml" href="https://www.example.com/url/to/amp/document.html">
                                      
                                      

                                      And this to the AMP page:

                                      <link rel="canonical" href="https://www.example.com/url/to/full/document.html">
                                      

                                      are you using AMP pages?

                                      https://support.google.com/webmasters/answer/139066?hl=en

                                      https://www.ampproject.org/docs/fundamentals/discovery

                                      I hope that helps you if not please let me know.

                                      Respectfully,

                                      Tom

                                      1 Reply Last reply Reply Quote 0
                                      • BlueprintMarketing
                                        BlueprintMarketing @JH_OffLimits last edited by

                                        Cool, that's what I thought when I heard your description I just wanted to be very thorough because sometimes you get very little information and I appreciate you letting me know that.

                                        dynamic  serving URLs are identical to each other so you should have a self-referencing canonical tag because the URL does not change the real canonical tag just decides what should be in the index and the same URL.

                                        You're Rel canonical should be something like this example below

                                        Example URL https://www.example.com/example-url/

                                        because the end URL is the same and URL that you want to be indexed in Google you want to be certain that you have a self-referencing URL to prevent query strings and other things like that and you do not need to point a URL to an identical URL you just need a self-referencing canonical if that makes sense.

                                        See: https://yoast.com/rel-canonical/

                                        I hope that is of help,

                                        Tom

                                        BlueprintMarketing JH_OffLimits 2 Replies Last reply Reply Quote 0
                                        • JH_OffLimits
                                          JH_OffLimits Subscriber @BlueprintMarketing last edited by

                                          Hi,

                                          I can't give off too much information as it's not my call, but I can answer your questions without mentioning the brands.

                                          1. We have multiple brand sites, that have a similar setup. They all have mobile and desktop versions of the sites running on the same URL, both of which show the same content.

                                          2. The server determines whether if you're on a desktop or mobile devices using the header information, and points the user to the site relevant files for the given device.

                                          3. Our sites would quite clearly fit in the dynamic serving category.

                                          We have 301 redirects on none www to www and http to https.

                                          BlueprintMarketing 1 Reply Last reply Reply Quote 1
                                          • effectdigital
                                            effectdigital @Nigel_Carr last edited by

                                            This is the correct solution!

                                            1 Reply Last reply Reply Quote 0
                                            • Nigel_Carr
                                              Nigel_Carr @JH_OffLimits last edited by

                                              The URLs are identical it is just the content that is served that may be slightly different.

                                              Since you can only specify one canonical for each URL it makes no difference. Just self-reference and that is it.

                                              If you had to different URLs then it would be an issue where you woudl need a rel=alternative so there is nothing to worry about.

                                              Regards

                                              Nigel

                                              effectdigital 1 Reply Last reply Reply Quote 2
                                              • BlueprintMarketing
                                                BlueprintMarketing last edited by

                                                You guys are fast I was going to answer this and had to do some other things but let me weigh in on couple things.

                                                as you said

                                                “We are in a predicament of how to properly use the canonical and alternate rel tags**. Currently we have a canonical on mobile and alternate on desktop, both of which have the same URL because both mobile and desktop use the same as explained in the first paragraph.”**

                                                so what you’re saying is that you have a dynamic site so you don’t need to add “alternate"media” tags to the site.

                                                https://developers.google.com/search/mobile-sites/mobile-seo/dynamic-serving

                                                As it is not immediately apparent in this setup that the site alters the HTML for mobile user agents (the mobile content is "hidden" when crawled with a desktop user agent), it’s  recommend that the server send a hint to request that Googlebot for smartphones also crawl the page, and thus discover the mobile content. This hint is implemented using the Vary HTTP header.

                                                **you don’t need this **

                                                Annotations in the HTML

                                                On the desktop page (http://www.example.com/page-1), add the following annotation:

                                                <code dir="ltr"><linkrel="alternate"media="only screen="" and="" (max-width:="" 640px)"<br="">href="http://m.example.com/page-1"></linkrel="alternate"media="only></code> 
                                                

                                                On the mobile page (http://m.example.com/page-1), the required annotation should be:

                                                 <code dir="ltr"><linkrel="canonical"href="http: www.example.com="" page-1"=""></linkrel="canonical"href="http:></code> 
                                                

                                                This rel="canonical" tag on the mobile URL pointing to the desktop page is required.

                                                Annotations in sitemaps

                                                We support including the rel="alternate"annotation for the desktop pages in sitemaps like this:

                                                 <code dir="ltr"><urlsetxmlns="http: www.sitemaps.org="" schemas="" sitemap="" 0.9"<br="">xmlns:xhtml="http://www.w3.org/1999/xhtml">
                                                  <url><loc>http://www.example.com/page-1/</loc>
                                                    <xhtml:linkrel="alternate"media="only screen="" and="" (max-width:="" 640px)"<br="">href="http://m.example.com/page-1"/></xhtml:linkrel="alternate"media="only></url></urlsetxmlns="http:></code> 
                                                

                                                The required rel="canonical" tag on the mobile URL should still be added to the mobile page's HTML.

                                                **to be sure **

                                                Are you willing to share your domain with us? Or one domain?

                                                1. We're talking about multiple websites that all have the identical site structure or at least mobile and desktop site structure?

                                                2. Your server is making the change for you?

                                                3. Would you be kind enough to install this plug-in on chrome in order for you to show a couple examples of the canonical and the URL?

                                                • https://chrome.google.com/webstore/detail/portents-seo-page-review/babgchcegnkbiojmdpnoilficladccfm?hl=en-US
                                                • https://chrome.google.com/webstore/detail/link-redirect-trace/nnpljppamoaalgkieeciijbcccohlpoh?hl=en

                                                In addition, would you be kind enough to run your site through the two tools here ( 100% free and very easy to use)

                                                • https://varvy.com/mobile/
                                                • https://varvy.com/
                                                • &
                                                • https://redbot.org/

                                                If you would not mind doing this and sending screenshots it would mean a lot to us and getting your canonical's straightened out.

                                                screenshots https://snag.gy/  then upload to http://imgur.com/

                                                everything is on the same server I'm assuming?

                                                Of the three below how would you categorize your site?

                                                1. https://developers.google.com/search/mobile-sites/mobile-seo/separate-urls
                                                2. https://developers.google.com/search/mobile-sites/mobile-seo/dynamic-serving
                                                3. https://developers.google.com/search/mobile-sites/mobile-seo/responsive-design

                                                Respectfully,

                                                Tom

                                                JH_OffLimits 1 Reply Last reply Reply Quote 1
                                                • JH_OffLimits
                                                  JH_OffLimits Subscriber @Nigel_Carr last edited by

                                                  Would this mean we need canonical only on desktop or mobile site?

                                                  Nigel_Carr 1 Reply Last reply Reply Quote 0
                                                  • Nigel_Carr
                                                    Nigel_Carr @effectdigital last edited by

                                                    You are right - you could only use teh rel=alternate if there was an m. version or similar

                                                    Regards

                                                    Nigel

                                                    1 Reply Last reply Reply Quote 1
                                                    • effectdigital
                                                      effectdigital @Nigel_Carr last edited by

                                                      The self referencing canonical advice was solid and I 100% agree with it. The rel=alternate advice, I felt would cause problems (IMO). But as we all know, fiddly issues like this are highly subjective

                                                      Nigel_Carr 1 Reply Last reply Reply Quote 1
                                                      • Nigel_Carr
                                                        Nigel_Carr @effectdigital last edited by

                                                        Then there is no problem simply putting a self-referencing canonical. There is in effect no mobile version as there is a single URL so no need for a rel=alternate.

                                                        It's an even easier solution. Well, there isn't a problem in the first place.

                                                        rel=alternate is only necessary if you have two different URLs! The fact they are the same takes away the problem.

                                                        Regards

                                                        Nigel

                                                        effectdigital JH_OffLimits 2 Replies Last reply Reply Quote 1
                                                        • effectdigital
                                                          effectdigital last edited by

                                                          Your problem is that you have two different sites loading on the same URL. If you are returning both the mobile and desktop / laptop site on the same URL, you would be expected to be using responsive design. In-fact, you may have re-invented another different way to implement responsive design which is probably, slightly less fluid yet slightly more efficient :')

                                                          Since your mobile and desktop pages both reside on exactly the same URL, I'd test the page(s) with this tool (the mobile friendly tool) and this tool (the page-speed insights tool). If Google correctly views your site as mobile friendly, and if within PageSpeed insights Google is correctly differentiating between the mobile and desktop site versions (check the mobile and desktop tabs) then both URLs should canonical to themselves (self referencing canonical) and no alternate tag should be used or deployed. Google will misread the alternate tag, which points to itself - as an error. That tag is to be used when your separate mobile site (page) exists on a separate URL, like an 'm.' subdomain or something like that

                                                          Imagine you are Googlebot. You are crawling in desktop mode, load the desktop URL version and find that the page says, it (itself) is also the mobile page. You'd get really confused

                                                          Check to see whether your implementation is even supported by Google using the tools I linked you to. If it is, then just use self referencing canonical tags and do not deploy alternate tags (which would make no sense, since both versions of the site are on the same URL). When people build responsive sites (same source code on the same URL, but it's adaptive CSS which re-organises the contents of the page based upon viewport widths) - they don't use alternate tags, only canonicals

                                                          Since your situation is more similar to responsive design (from a crawling perspective) than it is to separate mobile site design, drop the alt

                                                          1 Reply Last reply Reply Quote 1
                                                          • effectdigital
                                                            effectdigital @Nigel_Carr last edited by

                                                            The problem with this is, where you say "corresponding mobile URL" - there isn't one as OP has stated that, two different source codes  (pages) can be rendered on the same URL depending upon the user's screen size / user-agent (however they are detecting mobile, and serving different pages)

                                                            Nigel_Carr 1 Reply Last reply Reply Quote 0
                                                            • Nigel_Carr
                                                              Nigel_Carr last edited by

                                                              Hi JH

                                                              This is very straightforward.

                                                              Use the following annotations:

                                                              1. On the desktop page, add a  rel=”alternate” tag pointing to the corresponding mobile URL. This helps Googlebot discover the location of your site’s mobile pages.
                                                              2. On the mobile page, add a link rel=”canonical” tag pointing to the corresponding desktop URL.

                                                              It is that simple and doing this will not create duplicate content

                                                              More here: https://developers.google.com/search/mobile-sites/mobile-seo/separate-urls

                                                              Regards Nigel

                                                              effectdigital 1 Reply Last reply Reply Quote 0
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                                                              • tomcraig86

                                                                Canonical URL & sitemap URL mismatch

                                                                Hi We're running a Magento store which doesn't have too much stock rotation. We've implemented a plugin that will allow us to give products custom canonical URLs (basically including the category slug, which is not possible through vanilla Magento). The sitemap feature doesn't pick up on these URLs, so we're submitting URLs to Google that are available and will serve content, but actually point to a longer URL via a canonical meta tag. The content is available at each URL and is near identical (all apart from the breadcrumbs) All instances of the page point to the same canonical URL We are using the longer URL in our internal architecture/link building to show this preference My questions are; Will this harm our visibility? Aside from editing the sitemap, are there any other signals we could give Google? Thanks

                                                                Intermediate & Advanced SEO | | tomcraig86
                                                                0
                                                              • llamb

                                                                Using Canonical URL to poin to an external page

                                                                I was wondering if I can use a canonical URL that points to a page residing on external site? So a page like:
                                                                www.site1.com/whatever.html will have a canonical link in its header to www.site2.com/whatever.html. Thanks.

                                                                Intermediate & Advanced SEO | | llamb
                                                                0
                                                              • Jenny1

                                                                Partial duplicate content and canonical tags

                                                                Hi - I am rebuilding a consumer website, and each product page will contain a unique product image, and a sentence or two about the product (and we tend to use a lot of the same words in different ways across products). I'd like to have a tabbed area below the product info that talks about the overall product line, and this content would be duplicate across all the product pages (a "Why use our products" type of thing). I'd have this duplicate content also living on its own URL's so they can be found alone in the SERP's. Question is, do I need to add the canonical tag to this page, since there's partial duplicate content on the product pages? And if I did that, would my product pages go un-indexed?? I understand how to handle completely duplicated content, it's the partial duplicate that I'm having difficulty figuring out.

                                                                Intermediate & Advanced SEO | | Jenny1
                                                                0
                                                              • NakulGoyal

                                                                Wildcard Redirects & Canonical Tags

                                                                I have an interesting situation. Current URLs Example1: www.domain.com/red-widgets-cid-1234.html
                                                                www.domain.com/red-widgets-cid-1234-1.html
                                                                www.domain.com/red-widgets-cid-1234-1-1.html Canonical on All Above URLs:
                                                                www.domain.com/red-widgets-cid-1234.html New URL:
                                                                www.domain.com/red-widgets-cid-4567.html Current URLs Example2: www.domain.com/red-widgets-cid-1234+10.html
                                                                www.domain.com/red-widgets-cid-1234+10-1.html
                                                                www.domain.com/red-widgets-cid-1234+10-1-1.html Canonical on All Above URLs:
                                                                www.domain.com/red-widgets-cid-1234+10.html New URL:
                                                                www.domain.com/red-widgets-cid-6789.html Current URLs Example3: www.domain.com/red-widgets-cid-1234+10+5.html
                                                                www.domain.com/red-widgets-cid-1234+10+5-1.html
                                                                www.domain.com/red-widgets-cid-1234+10+5-1-1.html Canonical on All Above URLs:
                                                                www.domain.com/red-widgets-cid-1234+10+5.html New URL:
                                                                www.domain.com/american-red-widgets-cid-6789+5.html I want to make sure all variations of the above URL redirect to the new URLs.  However, as you see in Example 3, we are dealing with variables that are passed on. (+5 in this case). Question 1: What wildcard 301 redirect / regular expression can I use to tackle these ? Question 2: If we redirect www.domain.com/red-widgets-cid-1234+10+5.html to www.domain.com/red-widgets-cid-6789+5.html and www.domain.com/red-widgets-cid-6789+5.html contains the canonical tag www.domain.com/american-red-widgets-cid-6789+5.html, any concerns or red flags here ?

                                                                Intermediate & Advanced SEO | | NakulGoyal
                                                                0
                                                              • askotzko

                                                                Does rel=canonical fix duplicate page titles?

                                                                I implemented rel=canonical on our pages which helped a lot, but my latest Moz crawl is still showing lots of duplicate page titles (2,000+). There are other ways to get to this page (depending on what feature you clicked, it will have a different URL) but will have the same page title. Does having rel=canonical in place fix the duplicate page title problem, or do I need to change something else? I was under the impression that the canonical tag would address this by telling the crawler which URL was the URL and the crawler would only use that one for the page title.

                                                                Intermediate & Advanced SEO | | askotzko
                                                                0

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