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.
Why is rel="canonical" pointing at a URL with parameters bad?
-
Context
Our website has a large number of crawl issues stemming from duplicate page content (source: Moz).
According to an SEO firm which recently audited our website, some amount of these crawl issues are due to URL parameter usage. They have recommended that we "make sure every page has a Rel Canonical tag that points to the non-parameter version of that URL…parameters should never appear in Canonical tags."
Here's an example URL where we have parameters in our canonical tag...
http://www.chasing-fireflies.com/costumes-dress-up/womens-costumes/
rel="canonical" href="http://www.chasing-fireflies.com/costumes-dress-up/womens-costumes/?pageSize=0&pageSizeBottom=0" />
Our website runs on IBM WebSphere v 7.
Questions
- Why it is important that the rel canonical tag points to a non-parameter URL?
- What is the extent of the negative impact from having rel canonicals pointing to URLs including parameters?
- Any advice for correcting this?
Thanks for any help!
-
Thanks for the response, Eric.
My research suggested the same plan of attack: 1) fixing the canonical tags and 2) Google Search Console URL Parameters. It's helpful to get your confirmation.
My best guess is that the parameters you've cited above are not needed for every URL. I agree that this looks like something WebSphere Commerce probably controls. I'm a few organizational layers removed from whoever set this up for us. I'll try to track down where we can control that.
-
Thanks Peter!
-
Peter has a great answer with some good resources referenced, and i'll try to add on a little bit:
1. Why it is important that the rel canonical tag points to a non-parameter URL?
It's important to use clean URLs so search engines can understand the site structure (like Peter mentioned), which will help reduce the potential for index bloat and ranking issues. The more pages out there containing the same content (ie duplicate content), the harder it will be for search engines to determine which is the best page to show in search results. While there is no "duplicate content penalty" there could be a self inflicted wound by providing too many similar options. The canonical tag is supposed to be a level of control for you to tell Google which page is the most appropriate version. In this case it should be the clean URL since that will be where you want people to start. Users can customize from there using faceted navigation or custom options.
2. What is the extent of the negative impact from having rel canonicals pointing to URLs including parameters?
Basically duplicate content and indexing issues. Both of those things you really want to avoid when running an eComm shop since that will make your pages compete with each other for ranking. That could cost ranking, visits, and revenue if implemented wrong.
3. Any advice for correcting this?
Fix the canonical tags on the site would be your first step. Next you would want to exclude those parameters in the parameter handling section of Google Search Console. That will help by telling Google to ignore URLs with the elements you add in that section. It's another step to getting clean URLs showing up in search results.
I tried getting to http://www.chasing-fireflies.com/costumes-dress-up/mens-costumes/ and realize the parameters are showing up by default like: http://www.chasing-fireflies.com/costumes-dress-up/mens-costumes/#w=*&af=cat2:costumedressup_menscostumes%20cat1:costumedressup%20pagetype:products
Are the parameters needed for every URL? Seems like this is a websphere commerce setup kind of thing.
-
Clean (w/o parameters) canonical URL helps Google to understand better your url structure and avoid several mistakes:
https://googlewebmastercentral.blogspot.bg/2013/04/5-common-mistakes-with-relcanonical.html <- mistake N:1
http://www.hmtweb.com/marketing-blog/dangerous-rel-canonical-problems/ <- mistake N:4So - your company that giving this advise is CORRECT! You should provide naked URLs everywhere when it's possible.
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
-
Best way to "Prune" bad content from large sites?
I am in process of pruning my sites for low quality/thin content. The issue is that I have multiple sites with 40k + pages and need a more efficient way of finding the low quality content than looking at each page individually. Is there an ideal way to find the pages that are worth no indexing that will speed up the process but not potentially harm any valuable pages? Current plan of action is to pull data from analytics and if the url hasn't brought any traffic in the last 12 months then it is safe to assume it is a page that is not beneficial to the site. My concern is that some of these pages might have links pointing to them and I want to make sure we don't lose that link juice. But, assuming we just no index the pages we should still have the authority pass along...and in theory, the pages that haven't brought any traffic to the site in a year probably don't have much authority to begin with. Recommendations on best way to prune content on sites with hundreds of thousands of pages efficiently? Also, is there a benefit to no indexing the pages vs deleting them? What is the preferred method, and why?
Intermediate & Advanced SEO | | atomiconline0 -
Using "nofollow" internally can help with crawl budget?
Hello everyone. I was reading this article on semrush.com, published the last year, and I'd like to know your thoughts about it: https://www.semrush.com/blog/does-google-crawl-relnofollow-at-all/ Is that really the case? I thought that Google crawls and "follows" nofollowed tagged links even though doesn't pass any PR to the destination link. If instead Google really doesn't crawl internal links tagged as "nofollow", can that really help with crawl budget?
Intermediate & Advanced SEO | | fablau0 -
Pagination parameters and canonical
Hello, We have a site that manages pagination through parameters in urls, this way: friendly-url.html
Intermediate & Advanced SEO | | teconsite
friendly-url.html?p=2
friendly-url.html?p=3
... We've rencently added the canonical tag pointing to friendly-url.html for all paginated results. In search console, we have the "p" parameter identified by google.
Now that the canonical has been added, should we still configure the parameter in search console, and tell google that it is being use for pagination? Thank you!0 -
"sex" in non-adult domain name
I have a client with a domain that has "sex" in the domain name. For example, electronicsexpo.com. The domain ranks for a few keywords related to the services offered. It is an old domain that has been online for over 10 years. It ranks well for local keywords. No real SEO effort has been made on this domain, so it is rather a clean slate. I am going to be doing SEO on this site. Will the fact that the word "sex" exists in the name have any sort of negative consequence. There is ABSOLUTELY NOTHING adult related or pornographic on this site. I would think that search engines are sophisticated enough to differentiate, but would potential customers with things like parental filters be blocked from viewing content? Is this hurtful in anyway? If so, would I be better off changing domain names? TIA
Intermediate & Advanced SEO | | inhouseseo0 -
How do I get rel='canonical' to eliminate the trailing slash on my home page??
I have been searching high and low. Please help if you can, and thank you if you spend the time reading this. I think this issue may be affecting most pages. SUMMARY: I want to eliminate the trailing slash that is appended to my website. SPECIFIC ISSUE: I want www.threewaystoharems.com to showing up to users and search engines without the trailing slash but try as I might it shows up like www.threewaystoharems.com/ which is the canonical link. WHY? and I'm concerned my back-links to the link without the trailing slash will not be recognized but most people are going to backlink me without a trailing slash. I don't want to loose linkjuice from the people and the search engines not being in consensus about what my page address is. THINGS I"VE TRIED: (1) I've gone in my wordpress settings under permalinks and tried to specify no trailing slash. I can do this here but not for the home page. (2) I've tried using the SEO by yoast to set the canonical page. This would work if I had a static front page, but my front page is of blog posts and so there is no advanced page settings to set the canonical tag. (3) I'd like to just find the source code of the home page, but because it is CSS, I don't know where to find the reference. I have gone into the css files of my wordpress theme looking in header and index and everywhere else looking for a specification of what the canonical page is. I am not able to find it. I'm thinking it is actually specified in the .htaccess file. (4) Went into cpanel file manager looking for files that contain Canonical. I only found a file called canonical.php . the only thing that seemed like it was worth changing was changing line 139 from $redirect_url = home_url('/'); to $redirect_url = home_url(''); nothing happened. I'm thinking it is actually specified in the .htaccess file. (5) I have gone through the .htaccess file and put thes 4 lines at the top (didn't redirect or create the proper canonical link) and then at the bottom of the file (also didn't redirect or create the proper canonical link) : RewriteEngine on
Intermediate & Advanced SEO | | Dillman
RewriteCond %{HTTP_HOST} ^([a-z.]+)?threewaystoharems.com$ [NC]
RewriteCond %{HTTP_HOST} !^www. [NC]
RewriteRule .? http://www.%1threewaystoharems.com%{REQUEST_URI} [R=301,L] Please help friends.0 -
Should I NOFOLLOW my "Add To Cart" buttons?
Hello and Merry Christmass Should I NOFOLLOW my "Add To Cart" buttons? My e-commerce site has hundreds of products. Content wise, there is no real value to the reader on that page (besides for some testimonials and "why here" sentences). So it is not a page you'd want / expect to find in the SERPs. Also, with hundreds of links pointing to this page it would be "stronger" than other important pages which doesn't make sense. Last but not least, if I have limited time that the bots are on my site, why keep sending them to a non important page. This is why I am leaning to nofollowing the "add to cart" buttons and looking for reinforcements. Thanks
Intermediate & Advanced SEO | | BeytzNet0 -
Can too many "noindex" pages compared to "index" pages be a problem?
Hello, I have a question for you: our website virtualsheetmusic.com includes thousands of product pages, and due to Panda penalties in the past, we have no-indexed most of the product pages hoping in a sort of recovery (not yet seen though!). So, currently we have about 4,000 "index" page compared to about 80,000 "noindex" pages. Now, we plan to add additional 100,000 new product pages from a new publisher to offer our customers more music choice, and these new pages will still be marked as "noindex, follow". At the end of the integration process, we will end up having something like 180,000 "noindex, follow" pages compared to about 4,000 "index, follow" pages. Here is my question: can this huge discrepancy between 180,000 "noindex" pages and 4,000 "index" pages be a problem? Can this kind of scenario have or cause any negative effect on our current natural SEs profile? or is this something that doesn't actually matter? Any thoughts on this issue are very welcome. Thank you! Fabrizio
Intermediate & Advanced SEO | | fablau0 -
Schema.org Implementation: "Physician" vs. "Person"
Hey all, I'm looking to implement Schema tagging for a local business and am unsure of whether to use "Physician" or "Person" for a handful of doctors. Though "Physician" seems like it should be the obvious answer, Schema.org states that it should refer to "A doctor's office" instead of a physician. The properties used in "Physician" seem to apply to a physician's practice, and not an actual physician. Properties are sourced from the "Thing", "Place", "Organization", and "LocalBusiness" schemas, so I'm wondering if "Person" might be a more appropriate implementation since it allows for more detail (affiliations, awards, colleagues, jobTitle, memberOf), but I wanna make sure I get this right. Also, I'm wondering if the "Physician" schema allows for properties pulled from the "Person" schema, which I think would solve everything. For reference: http://schema.org/Person http://schema.org/Physician Thanks, everyone! Let me know how off-base my strategy is, and how I might be able to tidy it up.
Intermediate & Advanced SEO | | mudbugmedia0
