SEO3 min
When to use a canonical tag and what it actually solves
A practical guide to canonical tags, duplicate URLs, and why canonicalization helps search engines understand the preferred page version.
Canonical tags help consolidate duplicate URLs
A canonical tag tells search engines which URL should be treated as the preferred version when similar pages exist.
This is useful with tracking parameters, filtered category pages or CMS patterns that expose more than one URL for the same content.
They are a signal, not a hard rule
Search engines often respect canonical tags, but they are still hints rather than absolute commands.
The strongest results come when canonical tags match internal links, sitemaps, redirects and consistent on page signals.