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What is prefetching in Next.js and how does next/link prefetch routes?

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01

Understand the problem

Loading route code/data before navigation.

nextjsprefetchnext-linkperformance
02

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03

Study the solution

next/link prefetches the linked route's JS and (for static routes) data when the link is visible/hovered, so navigation feels instant. Prefetch can be disabled with prefetch={false}; in dev it's off. It populates the client Router Cache ahead of time.

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04

Read the code

Default vs disabled prefetch
import Link from 'next/link';

// default: prefetched when visible (production) → instant navigation
<Link href="/dashboard">Dashboard</Link>;

// long list / rarely clicked → skip prefetch to save bandwidth
{items.map((i) => <Link key={i.id} href={`/item/${i.id}`} prefetch={false}>{i.name}</Link>)}
05

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