Enter a page URL to see its canonical tag and whether it’s set correctly — so engines know the definitive page to index and cite.
Enter a URL and the checker reads its canonical tag (link rel="canonical") and tells you whether the page is self-canonical, points elsewhere, or is missing one entirely — and flags conflicting signals that split your ranking and citation authority across duplicate URLs.
Answer engines cite a source URL. When duplicate or parameter versions of a page compete, your authority — and your chance of being the cited page — gets diluted across them. A correct canonical consolidates that signal onto one URL, so search and AI both attribute you consistently.
A canonical tag (link rel="canonical") tells search and AI engines the definitive URL for a page when similar versions exist — so ranking and citations consolidate to one URL instead of being split.
Answer engines cite sources. If duplicate URLs dilute your authority, you’re less likely to be the cited page. A correct canonical concentrates that signal.
The page’s canonical points to itself — the correct setup for a primary page. If it points elsewhere, make sure that’s intentional (e.g. a variant deferring to a main product page).
Competitors, citations and the fixes that move you into the answer — see it in a live demo.
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