How to fix non self canonical on WordPress.org
Ensure every page's canonical tag points to that same page's own URL — fix any canonical that currently points to a different page unless the redirect is genuinely intentional.
Steps for WordPress.org
- Most non-self canonical issues in WordPress are caused by SEO plugins or theme code.
- If using Yoast SEO: open the post/page/product editor → scroll to the Yoast SEO meta box → click 'Advanced' → check the 'Canonical URL' field and clear any value that is not the page's own URL.
- If using Rank Math: open the editor → Rank Math sidebar or meta box → 'Advanced' tab → 'Canonical URL' — clear incorrect values.
- For a site-wide issue, check your theme's header.php (or equivalent) for a hard-coded <link rel="canonical"> tag and remove it, letting the SEO plugin handle canonicals.
- Also check for conflicting plugins: deactivate plugins one-by-one or search the active plugins list for others that output canonical tags (e.g., All in One SEO, The SEO Framework).
- Verify the fix by viewing page source and searching for 'canonical'.
<link rel="canonical" href="https://www.example.com/products/your-product-name/" />What is non self canonical?
A canonical tag is a small snippet of HTML code (rel="canonical") placed in a page's <head> section that tells Google: "This URL is the one I want indexed and credited." A self-referencing canonical means the tag on a page simply points back to that same page's URL. A non-self canonical means the tag on a page points to a different URL — effectively telling Google to ignore this page and credit another one instead. That instruction may be correct (for intentional duplicate pages) but it is frequently an accident that silently hides important pages from search engines.
When a canonical accidentally points to the wrong URL, Google treats the current page as a duplicate that should not be indexed. Your product, category, or content page disappears from search results — losing any organic traffic and sales it would have generated. Even if Google does crawl the page, any external links pointing to it pass their ranking power ("link equity") to the wrong destination. At scale — for example, a non-self canonical on every product page — this can wipe out an entire section of your organic traffic. Fixing stray canonicals is one of the highest-impact, lowest-effort SEO corrections you can make.
See the complete Non self canonical guide for every platform and the full background.
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