Tool · engine · active v1

Canonical checker

Duplicate URLs split your ranking signals. The checker verifies the canonical self-reference the audit requires.

What it checks

Fetches your page and checks that its canonical points at itself.

Canonical tag presence, self-reference after following redirects.

pass means the canonical resolves to the final URL; a missing or mismatched canonical fails; a missing page is na.

Reads the no-JS response only, never runs JS. Follows up to 5 redirects.

Official source: Search Central, canonicalization · Rule: canonical-self-reference v1

Example output

Canonical self-references