Website guide
Alternative pages and canonical tags: a safer SEO guide
Understand when a canonical tag can help with similar pages and why it is not a replacement for clear site structure.
Quick answer
A canonical tag is a signal that tells search engines which version of very similar pages you prefer. It works best when pages are genuinely close variants and the chosen canonical page is useful, accessible, and consistent with the site’s internal links.
A simple way to approach it
- 01
Identify why multiple similar URLs exist before adding tags.
- 02
Choose the one preferred URL and make its content complete and indexable.
- 03
Use self-referencing canonicals where appropriate and test the live HTML after release.
Good to know
- Do not use a canonical tag to hide unrelated or low-quality pages.
- Redirects, noindex, pagination, and canonicals solve different problems.
- Search engines may consider several signals, not only the canonical tag.