Case study: JS-rendered content that Google never indexed

Case study: JS-rendered content that Google never indexed

Setup: A React SPA had 4,000 pages where the main body loaded client-side. Pages were 'indexed' but ranked for nothing. I used GSC's URL Inspection 'View crawled page' plus the Rich Results live test to see the rendered HTML.

What it did well:
— The rendered snapshot proved Google saw an empty shell — the content div was blank at render time
— Confirmed it wasn't a noindex or robots issue, saving days of wrong guesses

Where it fell short:
— The live test renders differently from the indexing render queue; treat it as indicative
— Diagnosis only — the fix (SSR via Next.js) was a full re-platform

Verdict: 5/5 as a diagnostic. After SSR, indexed-with-content pages went from ~200 to ~3,800 in six weeks.

Best for: SPA owners with phantom rankings. Not for: server-rendered sites.