Scalable Next.js Web Apps in 2026: 380KB to 94KB
We dropped a Next.js App Router bundle from 380KB to 94KB and TTI from 11s to 2.3s. The scalable architecture behind it — and how to ship it by default.
Apr 18, 202625 min read5

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Articles tagged with #performance
We dropped a Next.js App Router bundle from 380KB to 94KB and TTI from 11s to 2.3s. The scalable architecture behind it — and how to ship it by default.

Stop writing React bugs into production. A senior engineer's guide to hook discipline, TypeScript patterns, and the Next.js App Router in 2026, with real code.

We had a 3.2s LCP and 23% first-session drop-off. Here's what the Next.js App Router fixes actually looked like — load time down 40%, repeat orders up 74%.
