Canonical missing

Opportunity severity, in the Canonicals tab

Why it matters

Without a canonical, parameter or duplicate versions of the page may compete with it.

How to fix it

Add a self-referencing canonical link on every indexable page.

How Crawlune finds it

Crawlune flags Canonical missing 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.