RankAssurance
Learn · canonical tag

What Is a Canonical Tag, and Is Mine Set Right?

A canonical tag tells search engines which URL is the real, indexable version of a page — so duplicate or parameter URLs don't split your ranking signals. It's a single line in the page head.

What "Good" Looks Like

A good canonical is present, absolute, and points to a URL on your own site — ideally the page's own clean address. A missing, relative, or off-site canonical is a real finding, reported with its evidence.

We show the meaning and our disclosed bands — never a secret weight or threshold.

Now check your own site

Run the Real Read.

Live check · runs on your site

Check Canonical Tag on a Real Domain

Enter a domain and we'll run the real read — and tell you plainly if the signal isn't there or the page can't be reached.

A real, single-signal read through the same machinery the full scan uses. We report what we can measure and label what we can't.

Keep Reading

DMARC

What Is DMARC, and Does My Domain Have It?

SPF

What Is an SPF Record, and Is Mine Valid?

DNSSEC

What Is DNSSEC, and Is My Domain Signed?

Run a full scan instead →See the Rank Codex