Technical SEO · Answer

What is a canonical URL?

A canonical URL identifies a preferred address for duplicate or closely similar content. It is a signal to search engines, not a command that always overrides other evidence. To apply this to your website, start with the specific page or setting involved. Internal links and canonical tags agree and the preferred destination loads correctly. Follow the quick checks below or use the linked full guide for a more complete walkthrough.

A quick way to handle this

Start by confirming the live URL or record involved and what the visitor is trying to accomplish. Choose one preferred URL that is accessible and consistent with links, redirects and internal navigation.

Add a canonical link element to duplicate HTML pages where appropriate and use redirects for retired alternatives when safe.

Practical example

A product guide appearing at `/guide` and `/guide?source=email` should point to the clean preferred address.

This is a hypothetical illustration; verify the facts and settings for your own website before applying it.

How to check the result

Internal links and canonical tags agree and the preferred destination loads correctly.

Check the public version of the page, not only an editor preview. Record the affected URLs and whether any remaining issue needs a deeper review.

One mistake worth avoiding

Pointing all pages to the home page as canonical or selecting a canonical that returns 404.

Search engines choose their own ranking and indexing outcomes. Focus on producing an accurate, usable page rather than promising a particular placement.

Key takeaways

Find whether the same content is accessible at different URLs, such as HTTP/HTTPS, trailing slash or tracking-parameter variants.
Add a canonical link element to duplicate HTML pages where appropriate and use redirects for retired alternatives when safe.
Internal links and canonical tags agree and the preferred destination loads correctly.