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Next.jsOptimization & Performance

12 items

1

Dynamic Imports with next/dynamic

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2

Image Optimization with next/image

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3

Font Optimization with next/font

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4

Static vs Dynamic Rendering

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5

Data Caching and Request Memoization

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6

loading.js and Instant Loading States

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7

Script Optimization with next/script

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8

Automatic Code Splitting

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9

Streaming and Suspense Boundaries

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10

Lazy Loading Components

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11

Prefetching Links with next/link

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12

Metadata API for SEO

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FlashcardIntermediate

loading.js and Instant Loading States

A loading.js file shows an instant fallback UI while a route segment loads.

Question

What does a loading.js file do in the App Router?

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