Free Tool
Free Canonical Tag Checker
Paste a page’s HTML or a list of URLs to catch missing, duplicate, conflicting or relative canonical tags before Google does. No sign-up needed.
Paste the full HTML source of a page (view-source or “Inspect > Elements”). We scan for every <link rel=”canonical”> tag in the <head>.
One page per line, format: page-URL , canonical-URL. Leave the part after the comma empty to test a missing canonical.
Results
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