Prevent duplicate content issues with proper canonical tags
What is a canonical tag? It tells search engines which URL is the "master" version of a page when you have duplicate or similar content at multiple URLs.
This should be the URL you want search engines to index and rank.
Your Canonical Tag
Common Scenarios
HTTP vs HTTPS versions
Point http:// pages to https:// version
www vs non-www
Choose one: www.example.com or example.com
URL parameters
Point ?sort=price&color=red variations to the base URL
Paginated content
Sometimes point /page/2 to /page/1 or use self-referencing
When to Use Canonical Tags
Same content accessible via multiple URLs
Product pages with different sorting/filtering options