What is Canonical Tag?
TL;DR
An HTML element that tells search engines which version of a page is the "main" one. If you have similar content accessible at multiple URLs (common with e-commerce filters or tracking parameters), canonical tags prevent Duplicate Content issues. They consolidate Page Authority to your preferred URL.
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Frequently Asked Questions About Canonical Tag
When do I need canonical tags?
Use canonical tags when the same content is accessible at multiple URLs: www vs non-www, HTTP vs HTTPS, pages with tracking parameters, product pages with filter variations, or syndicated content. Point all variations to the preferred version.
How do I add a canonical tag to my pages?
Add a link tag in your page's head section: <link rel='canonical' href='https://yoursite.com/preferred-url/' />. Most CMS platforms handle this automatically. Yoast SEO and similar plugins let you set canonical URLs in page settings.
What happens if I set the wrong canonical URL?
If you point the canonical to a different page, Google may not index your page's content. If you point to a non-existent page, Google typically ignores the tag. Common mistake: canonicalizing to HTTP when your site is HTTPS. Check canonical tags in Google Search Console.
Terms Related to Canonical Tag
Duplicate Content
Identical or very similar content appearing at multiple URLs. This confuses search engines about which version to rank....
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