What Is a Canonical URL? (And Why It’s Crucial for SEO)
Use Cases
Avoid keyword cannibalization and consolidate ranking signals when multiple URLs show similar product listings.
Point canonical tags to your original article to retain SEO credit even when republished elsewhere.
Set a canonical tag to consolidate separate mobile and desktop URLs under one main domain.
Tracking URLs with UTM Parameters
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Frequently Asked Questions
What is the purpose of a canonical URL?
The primary purpose is to tell search engines which version of a page is the authoritative source, helping avoid duplicate content issues and consolidating SEO signals under one URL.
How do I implement a canonical URL?
Add a <link rel="canonical" href="https://yourpreferredurl.com" /> tag in the <head> section of your HTML. Make sure the canonical URL is consistent and matches the page you want indexed.
Will setting a canonical URL improve SEO?
Yes. It helps concentrate link equity, prevent dilution of ranking signals, and ensures search engines index your preferred content version, improving page authority and rankings.
Can I canonicalize between different domains?
Search engines may treat duplicate pages independently, splitting link authority and rankings. Your site could suffer from reduced SEO performance and inefficient crawling.
What happens if I don’t use a canonical tag?
No. Canonical tags are hints, not directives like 301 redirects. They don't prevent pages from being accessible — they simply guide search engines to prefer one over others.
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