Canonical points to HTTP from an HTTPS page

Error severity, in the Canonicals tab

Why it matters

This tells search engines the insecure version is the primary one.

How to fix it

Update the canonical to the HTTPS URL.

How Crawlune finds it

Crawlune flags Canonical points to HTTP from an HTTPS page automatically on every crawl and lists the affected URLs under the Canonicals tab, where you can filter, inspect each page and export the list to CSV. The free version crawls up to 550 URLs with every check enabled.