Canonicalization is a technique that aims to address duplicate content issues by specifying which URL of a page should be shown in search engine results.

A canonical tag (aka “rel canonical”) is a way of telling crawlers that a particular URL is a duplicate of a page, and where to find the original. Google doesn’t like duplicate content, so this is the way of making it clear to search engines which piece of content came first.

Nick Berns
Posted By Nick Berns

Nick Berns is a web developer & SEO specialist.