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Canonical URL Checker

Extract, resolve and compare a canonical link with the page URL.

Free foreverRuns in your browserNo sign-up

Canonical

Missing

https://example.com/page

About the Canonical URL Checker

Canonical URL Checker finds the first rel=canonical link in pasted HTML, resolves relative references and compares it with the entered page URL.

A different canonical may be intentional, but it should be absolute, indexable and aligned with internal links and sitemaps.

Key features

  • Canonical tag extraction
  • Relative URL resolution
  • Self-reference comparison
  • Missing-tag warning

How to use

  1. 1Enter the exact page URL.
  2. 2Paste its source HTML.
  3. 3Confirm whether the resolved canonical is intentional.

Examples

Use the Canonical URL Checker
Input: Page URL and HTML containing the same canonical
Output: Self-referencing status

Normalize trailing slashes and protocol consistently.

Frequently asked questions

Must every page self-canonicalize?
Self-referencing canonicals are common, but architecture and duplicate handling determine the right target.
Does this check target indexability?
No. Inspect the canonical target separately.
Is my data uploaded?
No. Analysis and generation happen entirely in your browser.

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