Image component and optimization in NextJS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the Next.js <Image> component?

The Next.js <Image> component automatically optimizes images by resizing, lazy loading, and serving modern formats to improve page speed and user experience.

beginner

How does lazy loading work in the Next.js <Image> component?

Lazy loading delays loading images until they are about to enter the viewport, reducing initial page load time and saving bandwidth.

beginner

Which attribute in the Next.js <Image> component specifies the image source URL?

The 'src' attribute specifies the image source URL or path for the <Image> component.

intermediate

What is the benefit of using the 'priority' attribute in the Next.js <Image> component?

The 'priority' attribute tells Next.js to preload the image, making it load faster for important images like above-the-fold content.

intermediate

How does Next.js handle different device sizes with the <Image> component?

Next.js automatically generates multiple image sizes and serves the best size based on the device's screen size and resolution, improving load speed and clarity.

What does the Next.js <Image> component do by default?

A Optimizes images by resizing and lazy loading

B Only displays images without optimization

C Converts images to text

D Disables image loading

The Next.js component automatically optimizes images by resizing and lazy loading.

Which attribute is used to preload an important image in Next.js?

A lazy

B preload

C loading

D priority

The 'priority' attribute preloads important images to improve loading speed.

How does Next.js decide which image size to serve?

A Based on device screen size and resolution

B Randomly picks a size

C User manually selects size

D Always serves the largest image

Next.js serves the best image size based on the device's screen size and resolution.

What is lazy loading in the context of Next.js images?

A Loading all images immediately

B Delaying image loading until needed

C Skipping image loading

D Loading images in reverse order

Lazy loading delays image loading until the image is near the viewport.

Which attribute specifies the image source in the Next.js <Image> component?

A href

B alt

C src

D link

The 'src' attribute specifies the image source URL or path.

Explain how the Next.js component improves website performance.

Think about how images load and how Next.js helps speed that up.

Describe the role of the 'priority' attribute in the Next.js component.

Consider which images should load first on a page.