canonical-url
Installation
SKILL.md
Set canonical URLs for all pages
Duplicate content from URL parameters, www vs non-www, or pagination dilutes ranking signals—canonical tags consolidate these signals to the preferred URL.
Quick Reference
- Canonical URLs tell search engines which version of a page to index
- Prevents duplicate content penalties from URL variations
- Use absolute URLs including protocol and domain
- Self-referencing canonicals are a best practice
Check
Verify that this page has a canonical URL tag and that it points to the correct preferred version.
Fix
Add or correct the canonical URL tag in the head section to prevent duplicate content issues.