What is a canonical URL?
A canonical URL is the version of a page you tell search engines is the “master” copy when the same or similar content exists at multiple URLs.
In plain English
Set via a rel=“canonical” tag, it consolidates duplicate or near-duplicate pages (e.g. with tracking parameters) into one, so ranking signals aren't split and the right URL shows in results.
Why it matters for AI search
Canonicals prevent AI engines from seeing several fragmented copies of your content, so the authority concentrates on one clear source they can confidently cite.
Frequently asked
Whenever the same content is reachable at multiple URLs, parameters, print versions, syndicated posts, point them all at the preferred URL.
No, it's a hint that keeps both pages accessible but tells engines which to index. A redirect actually sends users to the other URL.
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