Read a page’s declared canonical and flag obvious URL mismatches.
Use the Canonical Tag Checker
What this tool helps you check
A canonical link is a hint about a preferred URL for substantially similar content. This checker requests a public page, reads its HTML head and compares the declared canonical with the tested URL after basic normalization. It also reports whether no canonical tag is present.
How to use it
- Enter the public page URL you want to check
- Review the declared canonical and comparison result
- Inspect the final page and internal links when the canonical points elsewhere
Interpreting the result
A different canonical can be intentional for duplicates. This tool flags a mismatch for review; it cannot decide whether search engines accept the hint or whether two pages really are duplicates.
Limitations and next steps
Check important decisions against your original business data and the relevant provider documentation. Results describe the inputs supplied, rather than a guarantee of future outcomes.
Related free tools
Continue with Robots.txt Tester, Redirect Checker, XML Sitemap Validator or browse all free tools.
Frequently asked questions
Does a canonical tag force indexing?
No. It is a signal, not a guarantee of indexing or canonical selection by a search engine.
Is this Canonical Tag Checker free?
Yes. This tool is available without an account. URL inspection requests are rate limited to keep the service responsive.