Add a canonical URL

Without a canonical, parameters, trailing slashes, and http/https/www variants look like separate pages — Google splits your link equity across the duplicates and may rank the wrong one.

How to fix

Add a self-referencing absolute canonical to every page; point true duplicates at the preferred URL. Be consistent about www and trailing slashes.

<link rel="canonical" href="https://example.com/the-preferred-url">

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Detected automatically by the SEOlvl SEO Health audit (check canonical). Run a free audit or see the full issue library.