FREE TOOLCanonical URL Checker. No sign-up.No sign-up.

Check a page's canonical URL

See which URL a page names as its canonical, whether it points to itself, and whether the canonical URL really loads.

✓ Free, no sign-up✓ Results in seconds✓ A fix for every problem

30 free checks a day. We read the public page and do not store it.

What it checks

What it checks.

Canonical URL Checker

rel=canonical tag and HTTP Link header
More than one canonical
Relative instead of absolute URLs
Whether the canonical URL answers 200, redirects or is set to noindex

Quick answers

Frequently asked questions.

What is a canonical URL?

The address you tell search engines to treat as the main version of a page when the same content is reachable at several URLs, for example with tracking parameters.

Should every page have a self-referencing canonical?

It is a safe default. It tells search engines this URL is the preferred version and folds parameter variants into it.

Is a canonical a command?

No, Google treats it as a strong hint. A canonical that redirects, returns an error or is set to noindex gives mixed signals, which is why the checker loads it.

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