What is a rel canonical?

rel=canonical tag helps in dealing with the duplicate content. It is an HTML element preventing duplicate content issues. Canonicalization signifies to individual web pages loading from multiple URLs. It helps in normalizing several URLs.
 
An option for dealing with duplicate content is to utilize the rel=canonical tag. The rel=canonical tag passes the same amount of link juice (ranking power) as a 301 redirect, and often takes much less development time to implement. The tag is part of the HTML head of a web page.
 
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