Tools / Canonical Checker
Canonical Checker
Inspect a page’s declared canonical URLs. Resolve relative values and spot conflicting declarations in source HTML.
Your canonical report
Check a URL to see declarations, original values, and resolved destinations here.
Which URL does this page prefer?
A canonical annotation expresses a preferred URL for duplicate or similar content. This checker extracts link elements from one page’s HTML and shows the original href beside its resolved destination.
The report is a source check, not an indexability verdict. It does not verify placement inside a valid head, HTTP Link headers, JavaScript changes, or Google’s selected canonical.
Resolve the value, then review the intent
1. Inspect the page. Enter its public URL. If fetching is refused, paste the page source and supply the URL it came from. The URL check resolves relative values against the final fetched URL.
2. Compare declarations. Read the original href and resolved destination together. A different destination may be intentional for duplicate content; a matching destination is self-referencing. Neither result proves what is indexed.
3. Fix and recheck. Choose the intended representative page, keep one canonical annotation in a valid HTML head, and check the published source again. Inspect the destination separately before relying on it.
A relative path can be valid and still be worth replacing
On https://example.com/shop/item?ref=email, the value /shop/item resolves to https://example.com/shop/item. If that is the intended preferred page, publish the absolute value:
<link rel="canonical" href="https://example.com/shop/item">
A base href can change how a relative path resolves. Review the resolution base in the report before changing the tag.
Keep declarations separate from search-engine decisions
A declaration expresses a preference. A redirect changes where a request ends. Google’s indexed choice requires separate evidence from Search Console. Read Google’s canonical guidance before changing your implementation.
Once the declaration is clear, use the Title & Meta Checker to review the page’s search presentation, or explore SEO Site Audit for the broader workflow.