How to fix non self canonical on WooCommerce
Audit every page whose canonical tag points to a different URL, then either correct it to self-reference or confirm the cross-reference is intentional and correct.
Steps for WooCommerce
- WooCommerce relies on WordPress's SEO plugin for canonical tags — the most common culprits are Yoast SEO, Rank Math, or All in One SEO.
- For Yoast SEO: navigate to the affected page/product in wp-admin, scroll to the Yoast SEO meta box, click the 'Advanced' tab (gear icon), and check the 'Canonical URL' field — clear it if it contains a wrong URL so Yoast defaults to the page's own URL.
- For Rank Math: in the post/product editor, open the Rank Math sidebar, go to the 'Advanced' tab, and clear any value in the 'Canonical URL' field.
- For All in One SEO: in the post editor, open the AIOSEO meta box, go to 'Advanced', and clear the 'Canonical URL' field.
- If no plugin override exists, check your theme's header.php or a custom plugin for a hardcoded <link rel="canonical"> tag and remove or correct it.
- After saving, view-source the page on the frontend and confirm the canonical href matches the page's own URL.
What is non self canonical?
A canonical tag is a small snippet of HTML code, placed in the `<head>` of a page, that tells Google "this is the definitive version of this content." A self-canonical means the tag points back to the page itself — the norm for any page you want indexed. A non-self-canonical means the tag points to a different URL, effectively telling Google: "don't index me, index that other page instead." This is sometimes intentional (e.g., a filtered product-listing page deferring to the main category page), but when it happens by accident, Google will ignore the page entirely and index the wrong destination instead.
When a page has a non-self-canonical by mistake, Google treats it as a duplicate and removes it from search results — meaning all the organic traffic that page could earn is lost. If important product, category, or landing pages are accidentally canonicalized to the wrong URL, your store effectively disappears from Google for those queries. Even if Google doesn't fully honour the tag, it still dilutes your crawl budget and creates confusing ranking signals. Fixing accidental non-self-canonicals can restore lost rankings quickly, while verifying intentional ones ensures you're not accidentally de-indexing pages you need.
See the complete Non self canonical guide for every platform and the full background.
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