Labs
Public, opt-in snapshots from free sandbox diagnostics — crawlability, schema, and performance signals. Compare URLs or read curated framework writeups. Figures are decision aids (AI Estimate), not guarantees.
Next.js metadata vs client-only document.title
Why App Router generateMetadata wins over hydration-time title swaps for crawlability and SERP quality.
Hydration mismatch vs stable SSR first paint
Side-by-side: nondeterministic client trees versus a stable server render that hydrates cleanly.