Free SEO Tool

Canonical Tag Checker

Enter a URL to check whether a canonical tag is present and whether it points to the correct page.

Canonical tag best practices

Every page should have a self-referencing canonical unless it intentionally defers to another URL.
Canonical tags should use absolute URLs, not relative paths.
Ensure the canonical URL itself returns a 200 - not a redirect.
Do not use canonical tags as a substitute for proper 301 redirects.
Paginated pages should each have their own canonical, not point to page 1.

Crawly

Audit your entire site, not just one page

Crawly crawls every URL on your site and surfaces issues automatically. Free to download for Mac.