The preferred version of a web page when several URLs contain the same or very similar content. A canonical setting helps search engines understand which URL should be treated as the main version.
How Canonical Works
A canonical tag names the preferred version of a page when very similar content can be reached through more than one URL. Search engines can use that signal to consolidate indexing and ranking signals around the preferred address.
Simple Example
Two URLs show the same article, so the preferred URL is identified as canonical.
Why It Matters for Beginners
This matters because duplicate or near-duplicate URLs can split signals and complicate indexing. A correct canonical can help clarify which version should represent the content in search.
A Common Mistake
Using a canonical tag to hide a URL-management problem that should actually be fixed with redirects or cleanup.
Related Terms
- Search Engine Optimization
- Metadata
- Domain Name