Public specification of a preferred URL for a page allows search engines to understand the original location for content.
This chart represents Canonical Content Tag web usage trends over a historical time period on a large selection of website homepages queried by BuiltWith. See the FAQ for more information.
We know of 4,085,338 sites using Canonical Content Tag, download website list.
The usage trends within the top million sites are updated once per week with the last update occurring on 18 May 2012.
For more information about Canonical Content Tag visit http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html.
Canonical Content Tag is most likely to be found in use on Shopping, Business or Technology type websites.
Canonical Content Tag Top Ten Website Industry Distribution in the Top 100,000 Sites
The chart shows the typical type of websites Canonical Content Tag can be found on by distribution. We know of 40
categories that Canonical Content Tag websites can be found on.