What is cononical URL?

[harinath0890]

What is Canonical URL? What is the purpose of creating canonical URL for SEO purpose?

[fakhruddin.ewc@]

When one web page open with different different URLs than may be the web page punished on that moment we are using canonical. Simply it is use for redirection.

[Rajdeep Bose]

Canonical issue like your website open with non www and www and /index.html but all have same content, so you should use 301 redirect other pages to www(.)domain(.)com

[ijacksmith]

Canonical is the majors issues while you not aware about it. Like when you want to view your page before the domain propagates, it can sometimes cause undesired effects. If you main page or home page is not resolved by the canonical then it may always problem to rank in major search engine. so keep in mind that you resolved by fixed and also you used 301 permanent redirection which is helps to maintain your site by canonical issue.

[sarvodyaseo]

Canonical is process to minimize the duplication in your website. you should add the canonical tag
<link rel="Canonical" href="website page url " / >