Act only if a page you want indexed is pointing its canonical somewhere else by mistake. This is one of 17 reasons in the Page indexing report. See every Page indexing reason and whether to fix it.
What It Means
A canonical tag is a line in a page's HTML that says "the main version of this page is over there":
<link rel="canonical" href="https://northwind-outdoors.com/products/trail-tent-2p" />When URL A carries a canonical tag that points to URL B, and Google agrees, Google indexes B and lists A under this row. Both pages still work for visitors. Only one shows in search.
Google's help page names the classic cases: "an AMP page with a desktop canonical, or a mobile version of a desktop canonical, or the desktop version of a mobile canonical." On most sites today, the URLs in this row come from more everyday sources.
Where These URLs Usually Come From
| Source | Example | Normal? |
|---|---|---|
| Tracking parameters | /pricing?utm_source=newsletter | Yes |
| Shopify product paths inside collections | /collections/tents/products/trail-tent-2p points to /products/trail-tent-2p | Yes, Shopify themes do this by default |
| Sort and filter URLs | /tents?sort=price | Yes |
| Print or share versions | /guide/print | Yes |
| AMP or separate mobile pages | /amp/guide | Yes |
| A page you want indexed | /services/teeth-whitening points to /services | No, fix it |
A large number in this row is not a warning sign. A store with 300 products in 10 collections can easily show thousands of these.
When It Is a Problem
Two cases need action:
- A key page points its canonical at another page by mistake. This happens when a template copies one canonical to every page, a plugin sets the homepage as canonical everywhere, or a staging URL is left in the tag. The page you want in Google will never be indexed while that tag points away.
- These URLs are in your sitemap. A sitemap should list only the canonical URLs. Switch the report filter to All submitted pages: if this row still appears, your sitemap lists alternates.
How to Check with URL Inspection
- Paste one example URL into URL Inspection.
- Open Page indexing and read two lines: User-declared canonical and Google-selected canonical.
- If both point to the page you want indexed, the row is fine.
- If the user-declared canonical points to a page you did not intend, fix the tag on the alternate page.
To check many pages at once, use our free canonical tag checker.
How to Fix It: A Wrong Canonical, by Platform
- WordPress (Yoast): edit the post, open the Yoast panel > Advanced > Canonical URL. Leave it empty for a self-referencing canonical.
- WordPress (Rank Math): edit the post, Rank Math panel > Advanced tab > Canonical URL.
- Shopify: the theme prints the canonical from
canonical_urlin theme.liquid. A wrong canonical is usually a theme edit or an app. Check theme.liquid first. - Webflow: Page settings > SEO settings > Page canonical URL for static pages, and Site settings > SEO > Global canonical tag URL for the whole site (Webflow Help Center).
- Wix: the page's SEO settings > Advanced SEO > Additional tags > canonical. Wix adds a self-referencing canonical to every page by default (Wix Help Center).
Canonical vs Redirect: Which to Use
| Use a canonical tag when | Use a 301 redirect when |
|---|---|
| Visitors still need the alternate URL (tracking links, filters, print view) | Nobody needs the old URL anymore |
| The pages are the same or nearly the same | The page moved or was merged |
| You want to keep both versions live | You want one version only |
Google calls both redirects and canonical tags "a strong signal" and sitemap inclusion "a weak signal." Signals can stack, so a canonical tag, consistent internal links and a clean sitemap work best together (Google, consolidate duplicate URLs, updated July 2026). A redirect shows up as Page with redirect instead. When duplicates have no canonical at all, see Duplicate without user-selected canonical.
The free 13-page Page indexing fix guide covers all 17 reasons with a triage tree and a printable tracker.
How to Use This with an AI Assistant
Connect SEOmatic at https://seomatic.ai/mcp and ask: "Sign me in with connect_seomatic, then inspect my 20 most important pages with gsc_indexing (action: batch_inspect). Show user-declared vs Google-selected canonical for each and flag any key page whose canonical points somewhere else." Reading your data is free after sign-in.
Let the Agents Fix Your Indexing Problems
SEOmatic's AI agents read your own Google Search Console data and fix what keeps pages out of Google, directly in your CMS:
- Remove stray noindex tags and correct canonicals on pages that should rank
- Fix robots.txt rules that block pages you want in Google
- Submit your sitemap and request indexing for pages that are ready
Each change can wait for your approval, one click undoes it, and the agents check it against how the rest of your site did. What they can change depends on your platform, and you see the full list before anything runs.
14-Day Trial for $1, credited to your first payment.
More From the Page Indexing Fix Guide
- The GuidePage Indexing: Why Pages Aren't Indexed
- GuideCrawled, Currently Not Indexed: The Fix
- GuideDiscovered, Currently Not Indexed: The Fix
- GuideSoft 404: What It Is and How to Fix It
- GuidePage Is Not Indexed: Page with Redirect
- GuideDuplicate Without User-Selected Canonical: The Fix
- GuideWhy Is My Website Not Showing Up on Google?
- GuideBlocked by robots.txt: What It Means and the Fix
- GuideExcluded by Noindex Tag: What It Means and the Fix
- GuideIndexed, Though Blocked by robots.txt
- The ChecklistSite Migration SEO Checklist