Canonical URL
Checker
Enter your URL — AISearch Global compares the page you actually reach against its declared canonical tag and flags any mismatch.
AISearch Global fetches your live site — no signup, no data stored
AISearch Global Canonical URL Checker · aisearch.global
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Built by AISearch Global · Sydney, Australia
About this tool
The AISearch Global Canonical URL Checker fetches a page, follows any redirects, and
compares the final URL it actually lands on against the <link rel="canonical"> tag
declared in the page head. A mismatch can split ranking and citation signals across what should be a
single authoritative URL.
For metadata beyond canonical tags, see the Meta & Technical Checker.
Frequently asked questions
What does the Canonical URL Checker compare?
It compares the URL your browser actually reaches after following redirects against the canonical URL declared in the page's <link rel="canonical"> tag, and reports whether they match.
Why does a canonical mismatch matter?
When the canonical tag points somewhere other than the URL actually served, search engines and AI systems can become unsure which version of a page is authoritative — which can split ranking signals and citation credit across duplicate URLs.
What if no canonical tag is present at all?
Most CMSs default to treating the fetched URL as canonical when no tag is present, but explicitly declaring one removes any ambiguity — especially for pages reachable via multiple URL variants (with or without trailing slash, with tracking parameters, and so on).