What is a canonical tag (and why it prevents SEO problems)?

A canonical tag is a small piece of code that tells search engines which version of a page is the primary one when similar or duplicate versions exist. It quietly prevents a common source of SEO confusion.

Why it matters

• •It stops duplicate versions from competing with each other.
• •It consolidates ranking signals onto one preferred URL.
• •It helps when the same content is reachable at multiple addresses.

You usually shouldn't have to think about it

On a well-built site, canonical tags are set correctly by default. But if you've ever had pages competing or duplicate URLs, canonicals are often the fix. It's one of those invisible technical details that keeps your SEO clean.