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
-
Are rel=author and rel=publisher meta tags currently in use?
Hello, Do these meta tags have any current usage? <meta name="author" content="Author Name"><meta name="publisher" content="Publisher Name"> I have also seen this usage linking to a companies Google+ Page:Thank you
Intermediate & Advanced SEO | | srbello0 -
Are HTML Sitemaps Still Effective With "Noindex, Follow"?
A site we're working on has hundreds of thousands of inventory pages that are generally "orphaned" pages. To reach them, you need to do a lot of faceting on the search results page. They appear in our XML sitemaps as well, but I'd still consider these orphan pages. To assist with crawling and indexation, we'd like to create HTML sitemaps to link to these pages. Due to the nature (and categorization) of these products, this would mean we'll be creating thousands of individual HTML sitemap pages, which we're hesitant to put into the index. Would the sitemaps still be effective if we add a noindex, follow meta tag? Does this indicate lower quality content in some way, or will it make no difference in how search engines will handle the links therein?
Intermediate & Advanced SEO | | mothner0 -
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 -
Using a lot of "Read More" Hidden text
My site has a LOT of "read more" and when a user click they will see a lot of text. "read more" is dark blue bold and clear to the user. It is the perfect for the user experience, since right below I have pictures and videos which is what most users want. Question: I expect few users will click "Read more" (however, some users will appreciate chance to read and learn more) and I wonder if search engines may think I am hiding text and this is a risky approach or simply discount the text as having zero value from an SEO perspective? Or, equally important: If the text was NOT hidden with a "Read more" would the text actually carry more SEO value than if it is hidden under a "read more" even though users will NOT read the text anyway? If yes, reason may be: when the text is not hidden, search engines cannot see that users are not reading it and the text carry more weight from an SEO perspective than pages where text is hidden under a "Read more" where users rarely click "read more".
Intermediate & Advanced SEO | | khi50 -
Set up a rel canonical
I have a question. I was wondering, if it was possible to set up a rel canonical. When I can't access the non canonical pages? For example, my site as at www.site.com , but the non cannocail is at site.com is their any way to set thet up without actually edting it at site.com ? Thanks for your help
Intermediate & Advanced SEO | | PeterRota0 -
"Jump to" Links in Google, how do you get them?
I have just seen yoast.com results in Google and noticed that nearly all the indexed pages show a "Jump to" link So instead of showing the full URL under the title tag, it shows these type of links yoast.com › SEO
Intermediate & Advanced SEO | | JohnPeters
yoast.com › Social Media
yoast.com › Analytics With the SEO, Social Media and Analytics all being clickable. How has he achieved this? And is it something to try and incorporate in my sites?0 -
How Rel=Prev & Rel=Next work for me?
I have implemented Rel=Prev & Rel=Next tag on my website. I would like to give example URL to know more about it. http://www.vistapatioumbrellas.com/market-umbrellas?limit=40&p=3 http://www.vistapatioumbrellas.com/market-umbrellas?limit=40&p=4 http://www.vistapatioumbrellas.com/market-umbrellas?limit=40&p=5 Right now, I have blocked paginated pages by Robots.txt by following query. Disallow: /*?p= I have removed disallow syntax from Robots.txt for paginated pages. But, I have confusion with duplicate page title. If you will check all 3 pages so you will find out duplicate page title across all pages. I know that, duplicate page title is harmful for SEO. Will Google crawl + index all paginated pages? If yes so which page will get maximum benefits in organic ranking? Is there any specific way which may help me to solve this issue?
Intermediate & Advanced SEO | | CommercePundit0 -
Is it safe to redirect multiple URLs to a single URL?
Hi, I have an old Wordress website with about 300-400 original pages of content on it. All relating to my company's industry: travel in Africa. It's a legitimate site with travel stories, photos, advice etc. Nothing spammy about. No adverts on it. No affiliates. The site hasn't been updated for a couple of years and we no longer have a need for it. Many of the stories on it are quite out of date. The site has built up a modest Mozrank value over the last 5 years, and has a few hundreds organically achieved inbound links. Recently I set up a swanky new branded website on ExpressionEngine on a new domain. My intention is to: Shut down the old site Focus all attention on building up content on the new website Ask the people linking to the old site to my new site instead (I wonder how many will actually do so...) Where possible, setup a 301 redirect from pages on the old site to their closest match on the new site Setup a 301 redirect from the old site's home page to new site's homepage Sounds good, right? But there is one issue I need some advice on... The old site has about 100 pages that do not have a good match on the new site. These pages are outdated or inferior quality, so it doesn't really make sense to rewrite them and put them on the new site. I call these my "black sheep pages". So... for these "black sheep pages" should I (A) redirect the urls to the new site's homepage (B) redirect the urls the old site's home page (which in turn, redirects to the new site's homepage, or (C) not redirect the urls, and let them die a lonely 404 death? OPTION A: oldsite.com/page1.php -> newsite.com
Intermediate & Advanced SEO | | AndreVanKets
oldsite.com/page2.php -> newsite.com
oldsite.com/page3.php -> newsite.com
oldsite.com/page4.php -> newsite.com
oldsite.com/page5.php -> newsite.com
oldsite.com -> newsite.com OPTION B: oldsite.com/page1.php -> oldsite.com
oldsite.com/page2.php -> oldsite.com
oldsite.com/page3.php -> oldsite.com
oldsite.com/page4.php -> oldsite.com
oldsite.com/page5.php -> oldsite.com
oldsite.com -> newsite.com OPTION 😄 oldsite.com/page1.php : do not redirect, let page 404 and disappear forever
oldsite.com/page2.php : do not redirect, let page 404 and disappear forever
oldsite.com/page3.php : do not redirect, let page 404 and disappear forever
oldsite.com/page4.php : do not redirect, let page 404 and disappear forever
oldsite.com/page5.php : do not redirect, let page 404 and disappear forever
oldsite.com -> newsite.com My intuition tells me that Option A would pass the most "link juice" to my new site, but I am concerned that it could also be seen by Google as a spammy redirect technique. What would you do? Help 😐1