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SEO003 · Canonical URL

Severity: warning

What it checks

Section titled “What it checks”

Every route must include a <link rel="canonical"> tag (own or inherited through the layout chain). A missing canonical link is flagged.

Why it matters

Section titled “Why it matters”

A canonical URL tells search engines which URL is authoritative, preventing duplicate-content dilution across query strings and trailing-slash variants.

How to fix

Section titled “How to fix”

Add <link rel="canonical"> in <svelte:head>, or set the canonical prop on your meta component:

<svelte:head>
  <link rel="canonical" href="https://example.com/this-page" />
</svelte:head>