Should I use canonical tag in these cases?
-
Should I use canonical tag in these cases?
- On the page itself (with the tag pointing to itself)
- On pages that doesn't have duplicate versions
-
Good question, one that I don't feel like gets addressed enough.
Yes, you should always include self-referring canonical tags. There's a few reasons for this, but primary it helps one version of your URLs get indexed. Here's a handful of cases where they're helpful:
- Some CMSs create URLs that are case-sensitive - i.e. URLs will resolve at /Some-page, /some-page, and /Some-Page
- HTTP vs. HTTPS - if you've gone secure, self-referring canonical tags can help search engines learn your new structure and drop HTTP URLs from the index quicker, or at least prevent both secure and non-secure from being indexed
- Absolute/Relative links - some development teams prefer to use relative URLs in links when working in Dev and Test environments, this is helpful for preventing unwanted Dev/Test URLs from getting indexed, but isn't ideal for SEO. This is where self-referring canonicals come in.
- WWW vs. Non-WWW - another safeguard to prevent indexing of both versions, even with redirects in place, it doesn't hurt to have a fall back
- URLs with Parameters - If your site appends parameters to URLs for any reason, self-referring canonicals will prevent indexation of /this-page?q=123
There's probably other reasons to add to this list, but these should be compelling enough to go ahead and add them.
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
-
Tags problem I need help
Hello I have a problem on my site and I want to help solve it I allow adding tags in search engines However, when writing new content, tags are not added to search engines This is my website link مجلة الحلوة
Technical SEO | | ahmedahmed3230 -
Canonical tag not working
I have a weebly site and I put the canonical tag in the header code but the moz crawler still says that I'm missing the canonical tag. Any tips?
Technical SEO | | ctpolarbears0 -
Does google look at H3 tags?
I've had someone tell me that google doesn't pay attention to H3 tags -- only H1 and H2. I haven't found much online to back this up or discredit it; thought I'd ask the Moz community!
Technical SEO | | LivDetrick5 -
Which Version Url to Use for Canonical Tags and in General for Homepage.
I want to put canonical tags on the homepage of a site. cant figure out the version of URL of the homepage should be with a / at the end or without the / ( www.example.com of www.example.com/ ) if I put into the google the URL with / I get the URL without the / in my browser, and it isn't showing as a redirect in my moz extension or other tools. But when I copy the URL from browser and paste elsewhere it pastes with a / I have two questions 1 - in general how does it work with URLs of homepages - I see this happening with lots of sites? 2 - which URL should I set as the canonical version of my homepage? Thanks so much
Technical SEO | | Ruchy0 -
Using 302 redirect for SEO
Hello, I'm in charge of SEO for an information website on which articles are only accessible if you have a login and password. Most of the natural links we get point to our subscribers' subomain : subscribers.mywebsite.com/article1 If they follow these natural links, visitors who are not logged get redirected (302) to www.mywebsite.com/article1 on which there is an extract of the article and they can request a free test subscription to read the end of the article. My goal is to optimize SEO for the www.mywebsite.com/article1 page. Does this page benefit from the links I get to the subscribers.mywebsite.com/article1 page or are theses links lost in terms of SEO? Thanks for your help, Sylvain
Technical SEO | | Syl200 -
IP canonization
Hi, I need your opinions about IP canonization. Site www.peoplemaps.com is on 78.136.30.112 IP. Now we redirect that IP to the main page (because of possible duplicate content). But, we have more sites on the same IP address. How can that affect on their SEO? Before redirecting, when we visit that IP address, the browser showed mainpage of www.peoplemaps.com, not any other site. Thanks, Milan edit: We have used 301 redirect.
Technical SEO | | MilanB.0 -
Do I have a canonical problem?
Does this site www.davidclick.com have a canonical problem because the home page can be requested via 3 different urls http://www.davidclick.com/
Technical SEO | | Nightwing
http://davidclick.com/
http://www.davidclick.com/index.htm but I'm confused in terms of applying a fix for example all advice here http://support.google.com/webmasters/bin/answer.py?hl=en&answer=139066#1 says i need to identify the duplicate files and add So my question is please if I do have a canonical problem how can i fix it when I only have one file for my home page, there are no duplicates 😞 Any insights welcome 🙂0 -
Duplicate Content and Canonical use
We have a pagination issue, which the developers seem reluctant (or incapable) to fix whereby we have 3 of the same page (slightly differing URLs) coming up in different pages in the archived article index. The indexing convention was very poorly thought up by the developers and has left us with the same article on, for example, page 1, 2 and 3 of the article index, hence the duplications. Is this a clear cut case of using a canonical tag? Quite concerned this is going to have a negative impact on ranking, of course. Cheers Martin
Technical SEO | | Martin_S0