Ahrefs’s guide to ‘canonical tags’
On our web pages we use tags to tell search engines what the pages features. A Canonical Tag is a tag, in the form of HTML code, that defines the main version for duplicate, near‐duplicate and similar pages.
The Ahrefs contributor Joshua Hardwick has published a useful guide on ‘canonical tags’.
Hardwick saysm “Canonical tags are nothing new. They’re been around since 2009—the best part of a decade.
Google, Microsoft and Yahoo united to create them. Their aim? To provide website owners with a way to solve duplicate content issues quickly and easily.
Do they work? Yes, perfectly… but only if you know how to use them!
In this guide, you’ll learn:
- What a canonical tag
- What a canonical tag looks like
- Why canonical tags are important for SEO
- How to implement canonical tags
- How to avoid common canonicalization mistakes
- How to find and fix canonicalization issues“.
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