Canonical Link Element – How to Avoid Duplicate Content
<Head>
…
<link rel=”canonical” href=”http://example.com/page.html”/>
…
</head>
(Don’t firget the final / at the end of the link tag.)
Each of these URL’s are viewed as unique:
- www.example.com
- example.com
- www.example.com/
- example.com/
- www.example.com/index.html
- www.example.com/Home.aspx
- example.com/Home.aspx
Source: Google Webmaster Central Blog
Canonical Link Element : Matt Cutts Presentation
The Canonical Link Element presentation was given on Thursday February 12, 2009
Notes: Google will give a sitemap preferential treatment when determining which URL to use when trying to determine Canonical isues.






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