Canonicalization
01 Definition
Canonicalization meaning: The process of choosing one preferred URL when the same content is reachable at several addresses.
Canonicalization is how a site or search engine picks a single, preferred URL to represent content that exists at multiple URLs. Signals include the rel=canonical tag, redirects, internal links, and sitemaps. The chosen URL is the one search engines aim to index and rank, consolidating duplicate signals.
Also called
Why it matters
How Canonicalization fits the work
Without a clear preferred URL, duplicate versions can split ranking signals and waste crawl budget, so canonicalization keeps value focused on one address.
In context
The product appeared at three URLs with different tracking parameters, so we set rel=canonical on all of them to point at the clean base URL.
Practical note
The rel=canonical tag is a strong hint, not a command; Google can ignore it if other signals, like internal links, point elsewhere.