For webpages which may duplicate some or all of their content with other pages (for legitimate reasons), the canonical URL is the URL of the page which search engines should link to.

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5
votes
3answers
250 views

Why treat these as different URLs?

These are all strictly different urls: http://www.example.com/page http://www.example.com/pAge http://www.example.com/page/ http://www.example.com/paGE/ I get that it conforms to the strict ISO ...
23
votes
2answers
467 views

How to use rel='canonical' properly

I have 3 URLS that serve the same data: www.example.com/product/foo www.example.com/product/foo?id=1 www.example.com?product=foo For Google's sake I want the URL www.example.com/product/foo to be ...
4
votes
1answer
218 views

www and non www can suffer duplicated content

Do you know if i should use canonical tag, or 301 redirection from http://mydomain.com to http://www.mydomain.com To avoid duplicated content penalty in case other pages link to the domain without ...
4
votes
2answers
386 views

Does the “canonical name” in DNS make any difference to search engines?

Some of our sites are setup with an "a record" to an IP address and some are setup as a cname of a server that then has an "a name" to the same server IP. I want it to be consistent. Which is the ...
4
votes
1answer
105 views

Canonical Tag Not Being Recognized

I'm puzzled by the first Google search result in this list. The first result has the following rel="canonical" tag: <link rel="canonical" ...
10
votes
1answer
496 views

How to handle canonical url changes like Stack Overflow

Stack Overflow sites all have pretty urls which include the question title. In the HTML it also have canonical url for that page. I just found out that when I change the question title, the url is ...
4
votes
2answers
467 views

Canonical url for a home page and trailing slashes

My home page could be potentially linked as: http://example.com http://example.com/ http://example.com/?ref=1 http://example.com/index.html http://example.com/index.html?ref=2 (the same page is ...
1
vote
3answers
48 views

Right canonical pages for encylopedia-style site

I have a website that contains a lot of short (150 word) descriptions of key concepts. The concepts are organised hierarchically so a description of Cheese will be a subsection under the heading "Milk ...
1
vote
1answer
207 views

pagination and duplicate content with one paragraph in each page with totally different listing

I have a module in my site which can be accessed like sitename.com/module/ This module has pagination. In the first page i have two paragraphs which describe about the site. This will appear in all ...