Is it possible to "undo" canonical tags as unique content is created?
-
We will soon be launching an education site that teaches people how to drive (not really the topic, but it will do). We plan on being content rich and have plans to expand into several "schools" of driving. Currently, content falls into a number of categories, for example rules of the road, shifting gears, safety, etc. We are going to group content into general categories that apply broadly, and then into "schools" where the content is meant to be consumed in a specific order.
So, for example, some URLs in general categories may be:
Then, schools will be available for specific types of vehicles. For example,
We will provide lessons at the school level, and in the general categories. This is where it gets tricky. If people are looking for general content, then we want them to find pages in the general categories (for example, drivingschool.com/rules-of-the-road/traffic-signs). However, we have very similar content within each of the schools (for example, drivingschool.com/motorbikes/rules-of-the-road/traffic-signs).
As you could imagine, sometimes the content is very unique between the various schools and the general category (such as in shifting), but often it is very similar or even nearly duplicate (as in the example above). The problem is that in the schools we want to say at the end of the lesson, "after this lesson, take the next lesson about speed limits for motorcycles" so there is a very logical click-path through the school. Unfortunately this creates potential duplicate content issues.
The best solution I've come up with is to include a canonical tag (pointing to the general version of the page) whenever there is content that is virtually identical. There will be cases though where we adjust the content "down the road"
to be more unique and more specific for the school. At that time we'd want to remove the canonical tag.
So two questions:
- Does anyone have any better ideas of how to handle this duplicate content?
- If we implement canonical tags now, and in 6 months update content to be more school-specific, will "undoing" the canonical tag (and even adding a self-referential tag) work for SEO?
I really hope someone has some insight into this!
Many thanks (in advance).
-
I'd agree with Sanket on (1) - while, not a huge fan of creating new URLs for near duplicates (there may be some other ways, like dynamically modifying the content), canonical tags are definitely your best bet here if you need those unique URLs.
I'll add a caveat on (2), though. Sometimes, canonical tags can "stick" a bit longer than you'd like, and Google may not re-index quickly. Adding a self-referential canonical tag does seem to help, anecdotally. What I'd also do is put those URLs back in your XML sitemap once they're unique (I'd leave them out while they're duplicates) - that can spur Google to reindex, and the self-referential tag can tell them to cancel the previous directive. Otherwise, they sometimes act like the old canonical is still in place.
-
Hi Jessica,
1. Implementation on canonical tag is the best solution in your case
2. Google doesn't index URLs in which you have implemented canonical tag, so I don't think you have to worry about it. After six month when you remove canonical tag I think you will get little boost in ranking as you have updated the page with unique content.
Hope this help you out...
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
-
Canonical tag on a large site
when would you reccomend using a canonical tag on a large site?
Intermediate & Advanced SEO | | Cristiana.Solinas0 -
Huge spike in "access denied" in search console
Hey Guys, We have seen a huge spike in "Access Denied" status in the google search console for our website and I have no idea why that would be the case. Is there anyone that can shed some light on what is going on or who can point me in the direction of an SEO specialist that we can pay to fix the issue?? Thanks denied.png
Intermediate & Advanced SEO | | fbchris0 -
Should I "NoIndex" Pages with Almost no Unique Content
I have a real estate site with MLS data (real estate listings shared across the Internet by Realtors, which means data exist across the Internet already). Important pages are the "MLS result pages" - the pages showing thumbnail pictures of all properties for sale in a given region or neighborhood. 1 MLS result page may be for a region and another for a neighborhood within the region:
Intermediate & Advanced SEO | | khi5
example.com/region-name and example.com/region-name/neighborhood-name
So all data on the neighborhood page will be 100% data from the region URL. Question: would it make sense to "NoIndex" such neighborhood page, since it would reduce nr of non-unique pages on my site and also reduce amount of data which could be seen as duplicate data? Will my region page have a good chance of ranking better if I "NoIndex" the neighborhood page? OR, is Google so advanced they know Realtors share MLS data and worst case simple give such pages very low value, but will NOT impact ranking of other pages on a website? I am aware I can work on making these MLS result pages more unique etc, but that isn't what my above question is about. thank you.0 -
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 -
Canonical Tags?
I read that Google will "honor" these tags if your website has two url's with duplicate content. The duplicate content does not show up in my SEOmoz crawls report but they do in the search engines and many of "non authoritative links" that are generated from my search feature j(ugly url's with % ...not real user friendly) are ranking higher than the "good URL" links. So if I do the canonical tags I guess my higher ranking bad urls will drop. I even read that google might even completely overlook the links. I read somewhere that the best way to do this is with a 301 redirect...is that correct? I m ranking pretty good with my main keyword terms so I am afraid to make changes not knowing the effect. Any suggestions? Thanks, Boo
Intermediate & Advanced SEO | | Boodreaux0 -
Is SEOmoz.org creating duplicate content with their CDN subdomain?
Example URL: http://cdn.seomoz.org/q/help-with-getting-no-conversions Canonical is a RELATIVE link, should be an absolute link pointing to main domain: http://www.seomoz.org/q/help-with-getting-no-conversions <link href='[/q/help-with-getting-no-conversions](view-source:http://cdn.seomoz.org/q/help-with-getting-no-conversions)' rel='<a class="attribute-value">canonical</a>' /> 13,400 pages indexed in Google under cdn subdomain go to google > site:http://cdn.seomoz.org https://www.google.com/#hl=en&output=search&sclient=psy-ab&q=site:http%3A%2F%2Fcdn.seomoz.org%2F&oq=site:http%3A%2F%2Fcdn.seomoz.org%2F&gs_l=hp.2...986.6227.0.6258.28.14.0.0.0.5.344.3526.2-10j2.12.0.les%3B..0.0...1c.Uprw7ko7jnU&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&fp=97577626a0fb6a97&biw=1920&bih=936
Intermediate & Advanced SEO | | irvingw1 -
Is it possible to Spoof Analytics to give false Unique Visitor Data for Site A to Site B
Hi, We are working as a middle man between our client (website A) and another website (website B) where, website B is going to host a section around websites A products etc. The deal is that Website A (our client) will pay Website B based on the number of unique visitors they send them. As the middle man we are in charge of monitoring the number of Unique visitors sent though and are going to do this by monitoring Website A's analytics account and checking the number of Unique visitors sent. The deal is worth quite a lot of money, and as the middle man we are responsible for making sure that no funny business goes on (IE false visitors etc). So to make sure we have things covered - What I would like to know is 1/. Is it actually possible to fool analytics into reporting falsely high unique visitors from Webpage A to Site B (And if so how could they do it). 2/. What could we do to spot any potential abuse (IE is there an easy way to spot that these are spoofed visitors). Many thanks in advance
Intermediate & Advanced SEO | | James770 -
Canonical Tags & Search Bots
Does anyone know for sure if search engine bots still crawl links on a page whose canonical tags are set to a different page? So in short, would it be similar to a no-index follow? Thanks! -Margarita
Intermediate & Advanced SEO | | MargaritaS0