metadata · metadata.canonical.missing
No canonical URL declared
The canonical tag tells Google which URL to consolidate ranking signals to when duplicates exist.
Why it matters
Without canonical, Google guesses — and may pick HTTP over HTTPS, or a URL with tracking params.
Example fix
<link rel="canonical" href="https://example.com/page" />
Authoritative reference
https://developers.google.com/search/docs/crawling-indexing/consolidate-duplicate-urls
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