How to fix non self canonical on WordPress.org
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 WordPress.org
- Canonical tags in WordPress are controlled by your active SEO plugin. Identify which one you use: Yoast SEO, Rank Math, All in One SEO, or SEOPress.
- For Yoast SEO: Edit the affected post/page, scroll to the Yoast SEO meta box, click the 'Advanced' tab (gear icon), and clear the 'Canonical URL' field to restore the default self-canonical.
- For Rank Math: In the post editor, open the Rank Math sidebar panel, click 'Advanced', and clear the 'Canonical URL' field.
- For All in One SEO: In the post editor's AIOSEO meta box, click 'Advanced' and clear the 'Canonical URL' field.
- Also check your theme's header.php or any custom plugin for a hardcoded <link rel="canonical"> — remove or correct any that override the SEO plugin output.
- Update/save the post, then view-source the frontend page and confirm the canonical matches the page 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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