Canonical URL Checker
Fetch a page and verify its canonical tag & redirects.
How it works
Enter a URL to check its canonical tag — whether it exists, is self-referencing, and matches the page after any redirects. Getting canonicals wrong causes duplicate-content problems and dilutes ranking signals.
This tool fetches the page from our server (so it works regardless of CORS). Unlike the other SEO tools, the URL you enter is sent to our backend.
How this one works: unlike the other SEO tools, the Canonical URL Checker fetches the page from our server so it can follow redirects and read the live HTML. The URL you enter is sent to our backend; the page contents are not stored.
About the Canonical URL Checker
This free canonical URL checker fetches a live page and inspects its canonical tag — whether one exists, whether it points back to the page itself, and how it behaves after any redirects. Getting canonicals wrong causes duplicate-content problems and splits the ranking signals between URLs.
Unlike the other SEO tools here, this one fetches the page from our server so it can follow redirects and read the live HTML; the URL you enter is sent to our backend.
What it checks
- Whether a rel=canonical tag is present, and its value.
- Whether the canonical is self-referencing (points to the page itself).
- The redirect chain, so you can see the page's final URL.
- Meta robots, title and description, plus common issues.
Frequently asked questions
What is a canonical URL?
The canonical tag tells search engines which URL is the definitive version of a page when the same or similar content is reachable at multiple URLs. It consolidates ranking signals onto one URL.
What does 'self-referencing canonical' mean?
It means a page's canonical tag points to its own URL. That's the normal, recommended setup for a standard page and confirms search engines should treat that URL as canonical.
Why does a wrong canonical hurt SEO?
If a page's canonical points to a different URL, search engines may index that other URL instead, so your page's content and links may not rank under the URL you expect.
Does this tool store my URL or the page?
The URL you enter is sent to our server to fetch the page; the page contents are analysed and returned but not stored.