Pages Without Valid Canonical Tag
What does this report contain?
All indexable pages which are missing a canonical tag, or with conflicting canonical URLs in the HTTP header and HTML head.
How can this report be used?
A canonical tag should be included on every page to prevent duplication issues. If a page contains 2 different canonical URLs, they will both be ignored. Use this report to identify all pages that can be updated with a canonical tag, or have conflicting canonical tags.