Multiple Canonical Tags

What This Means

Two or more <link rel="canonical"> elements were found in the document. Multiple canonical declarations for the same page create an ambiguous signal about which URL is the preferred canonical.

Why It Matters for SEO

Search engines typically use the first canonical they encounter and ignore subsequent ones. If the first canonical is not the intended one, the wrong URL may be canonicalized. Multiple canonicals almost always result from plugin or template conflicts — one component adds a canonical, and another component adds a different one without checking if one already exists.

What the Platform Checks

Counts all <link rel="canonical"> elements in the document. Fires when count > 1.

How to Fix It

• Identify every component that outputs a canonical tag (CMS SEO plugin, custom theme code, caching plugin, CDN edge rules).
• Designate one authoritative source for the canonical tag and disable all others.
• The most common conflict: a CMS SEO plugin AND a theme template both outputting canonicals. Disable the theme's canonical and let the SEO plugin manage it.
• After fixing: verify with View Source that exactly one canonical tag appears.