Is it ok to add rel=CANONICAL into the desktop version on top of the rel="alternate" Tag (Mobile vs Desktop version)
-
Hi mozzers,
We launched a mobile site a couples months ago following the parallel mobile structure with a URL:m.example.com
The week later my moz crawl detected thousands of dups which I resolved by implementing canonical tags on the mobile version and rel=alternate onto the desktop version. The problem here is that I still also got Dups from that got generated by the CMS.
?device=mobile
?device=desktop
One of the options to resolve those is to add canonicals on the desktop versions as well on top of the rel=alternate tag we just implemented. So my question here:
is it dangerous to add rel=canonical and rel=alternate tags on the desktop version of the site or not? will it disrupt the rel=canonical on mobile?
Thanks
-
Thank you Stephanie
-
Hi Taysir,
Great question! Honestly, I'm not confident what would happen if you add the rel=canonical and rel=alternate tags to the desktop version (and whether that will disrupt the rel=canonical on mobile or not). My advice is to test it out on a few select pages (I would recommend not testing your most important/highest revenue driving pages first, but on less critical pages) and see how the search engines deal with these pages. If the duplicates are removed and traffic to the mobile site isn't affected, then I would start scaling the rel=canonical out on other pages. However if you do see an issue with the combination of rel=canonical and rel=alternate on the desktop version, then it may be worth fixing the CMS, so that it no longer creates these duplicate pages.
Best,
Stephanie
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
-
Is Canonical Tags a Good Option With 2 Similar Sites?
I have an existing ecommerce site, on a Yahoo platform. I have recently started a different site on the Magento platform with substantially/almost entirely the same products and categories. For various reasons, I won't be ready to do a 301 redirect to the new domain for about another 8 months. I have 4 questions: Is it a good idea to use canonical tags in the meantime? Is there a way to know if the is cannibalization between the sites? They rank for different keywords. Will I lose all traffic and rankings for the Yahoo site if I go the canonical route? If I remove the canonical tags at a later point, will the ranking and traffic of the Yahoo site come back? Thanks in advance for your advice.
Intermediate & Advanced SEO | | Kevin_Hatanian0 -
Review site using canonical tag in a puzzling way.
Have just been looking at a review site and they're using the canonical tag very strangely, to me. For example, they may have several pages of reviews of the same item - they use the canonical tag on page 2/3/4 to point back at page 1 - and yet there is no duplication between the pages. Any idea why they might be doing this?
Intermediate & Advanced SEO | | McTaggart0 -
Using rel="nofollow" when link has an exact match anchor but the link does add value for the user
Hi all, I am wondering what peoples thoughts are on using rel="nofollow" for a link on a page like this http://askgramps.org/9203/a-bushel-of-wheat-great-value-than-bushel-of-goldThe anchor text is "Brigham Young" and the page it's pointing to's title is Brigham Young and it goes into more detail on who he is. So it is exact match. And as we know if this page has too much exact match anchor text it is likely to be considered "over-optimized". I guess one of my questions is how much is too much exact match or partial match anchor text? I have heard ratios tossed around like for every 10 links; 7 of them should not be targeted at all while 3 out of the 10 would be okay. I know it's all about being natural and creating value but using exact match or partial match anchors can definitely create value as they are almost always highly relevant. One reason that prompted my question is I have heard that this is something Penguin 3.0 is really going look at.On the example URL I gave I want to keep that particular link as is because I think it does add value to the user experience but then I used rel="nofollow" so it doesn't pass PageRank. Anyone see a problem with doing this and/or have a different idea? An important detail is that both sites are owned by the same organization. Thanks
Intermediate & Advanced SEO | | ThridHour0 -
Should you bother with an "impact links" manual action
I have a couple sites that have these, and I have done a lot of work to get them removed, but there seems to be very little if any benefit from doing this. In fact, sites were we have done nothing after these penalties seem to be doing better than ones where we have done link removal and the reconsideration request. Google says "I_f you don’t control the links pointing to your site, no action is required on your part. From Google’s perspective, the links already won’t count in ranking. However, if possible, you may wish to remove any artificial links to your site and, if you’re able to get the artificial links removed, submit a reconsideration request__. If we determine that the links to your site are no longer in violation of our guidelines, we’ll revoke the manual action._" I would guess a lot of people with this penalty don't even know they have it, and it sounds like leaving it alone really doesn't hurt your site. If seems to me that just simply ignoring this and building better links and higher quality content should help improve your site rankings vs. worrying about trying to get all these links removed/disavowed. What are your thoughts? Is it worth trying to get this manual action removed?
Intermediate & Advanced SEO | | netviper0 -
Use "If-Modified-Since HTTP header"
I´m working on a online brazilian marketplace ( looks like etsy in US) and we have a huge amount of pages... I´ve been studing a lot about that and I was wondering to use If-Modified-Since so Googlebot could check if the pages have been updated, and if it is not, there is no reason to get a new copy of them since it already has a current copy in the index. It uses a 304 status code, "and If a search engine crawler sees a web page status code of 304 it knows that web page has not been updated and does not need to be accessed again." Someone quoted before me**Since Google spiders billions of pages, there is no real need to use their resources or mine to look at a webpage that has not changed. For very large websites, the crawling process of search engine spiders can consume lots of bandwidth and result in extra cost and Googlebot could spend more time in pages actually changed or new stuff!**However, I´ve checked Amazon, Rakuten, Etsy and few others competitors and no one use it! I´d love to know what you folks think about it 🙂
Intermediate & Advanced SEO | | SeoMartin10 -
Fluctuating Rankings on "difficult" keywords
Hi guys, I have a client who wants to rank well for two very "difficult" keywords and eight easier ones. The easy ones are "treadmills + city" and the difficult ones are "treadmills" and "treadmill". We have got great traction on the "+city" keywords and he now ranks on page one for all those. However, we have noticed that although he ranks on page 2-3 for "treadmill" treadmills", those rankings fluctuate widely day to day. Rankings for the "+city" versions are stable, a rising slowly as I would expect. Rankings for the difficult keywords can be 235 one day, 32 the next week, 218 the day after that, then stable at 30ish for a week, then fluctuation again. I know Google update every day, but what are the likely causes of the easier keywords being stable, while the harder ones fluctuate? Thanks.
Intermediate & Advanced SEO | | stevedeane0 -
Is a 301 Direct with a canonical tag Possible ?
Hi All, Quick question , Are we correct in thinking that for any given URL it's not possible to do a 301 redirect AND a canonical tag? thanks Sarah
Intermediate & Advanced SEO | | SarahCollins0 -
Rel Canonical = WHAT
can someone please explain this "NOTICE" i am getting from my campaign...Is this a problem that needs attention?
Intermediate & Advanced SEO | | SEObleu.com0