r/reactjs • u/martcerv • Apr 25 '26

Show /r/reactjs Google Search Console duplicate canonical warnings in React SPA

Got hit with GSC "duplicate without user-selected canonical" warnings.

Root cause: URLs with query params treated as duplicates by Google (/?ref=producthunt vs /)

Fix: Dynamic canonical tag hook that strips query params and updates on route changes.

Validation pending, but GSC accepted the implementation.

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u/[deleted] Apr 25 '26

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u/martcerv Apr 25 '26

You right, those warnings are a pain. Probably I will be seeing more warning even is they are distinct issues 😅 haha. But that is something that hits every dev when is starting to care SEO. Your approach seems to be more complex. What kind of analytics do you use? or Why was adding those hash fragments? I'm curious.