What does the canonical tag do?

It tells search engines which URL is the preferred version when the same content is reachable at multiple URLs (with vs without www, http vs https, with vs without query string).

Should the canonical URL be absolute?

Yes. Use the full URL including the protocol — relative canonicals are ambiguous.

What about cross-domain canonicals?

Allowed. Point a syndicated copy to the original on another domain — Google respects it.

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Canonical Tag Generator

Build a clean rel="canonical" link tag for any URL. Strip tracking parameters and normalize trailing slashes.

URL

Canonical URL

HTML tag

<link rel="canonical" href="https://example.com/page?id=42" />

How to use Canonical Tag

Paste a URL — including any tracking parameters.
Toggle the cleanup rules: HTTPS, strip UTM, lowercase host.
Copy the clean canonical URL or the full <link rel="canonical"> tag.

How to use Canonical Tag

Frequently asked questions

What does the canonical tag do?

Should the canonical URL be absolute?

What about cross-domain canonicals?