Image optimization with next/image in NextJS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main purpose of the next/image component in Next.js?

The next/image component automatically optimizes images by resizing, lazy loading, and serving modern formats to improve page speed and user experience.

beginner

How does next/image help with responsive images?

It automatically generates multiple image sizes and serves the best size based on the user's device screen, saving bandwidth and improving load times.

beginner

Which attribute in next/image specifies the image source URL?

The src attribute specifies the path or URL of the image to display.

beginner

What is the benefit of lazy loading in next/image?

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

intermediate

How can you control the layout behavior of an image using next/image?

You can use the layout prop with values like fixed, intrinsic, responsive, or fill to control how the image sizes and fits in its container.

What does the next/image component do by default to improve performance?

A Converts images to GIF format

B Automatically optimizes images with resizing and lazy loading

C Disables image caching

D Loads all images immediately on page load

The next/image component automatically resizes images and lazy loads them to improve page speed and user experience.

Which prop do you use to specify the image source in next/image?

A src

B source

C url

D img

The src prop defines the image URL or path.

How does next/image handle different screen sizes?

A Generates multiple sizes and serves the best fit

B Serves the same image size to all devices

C Only serves images for desktop screens

D Requires manual resizing for each device

It creates multiple image sizes and serves the best one based on the device screen size.

What is the effect of lazy loading images with next/image?

A Loads images before the page content

B Disables image loading

C Delays image loading until needed

D Loads all images at once

Lazy loading delays image loading until the user scrolls near them, improving initial load speed.

Which layout value makes the image fill its container in next/image?

A fixed

B intrinsic

C responsive

D fill

The fill layout makes the image stretch to fill its parent container.

Explain how next/image improves website performance and user experience.

Think about how images load and adapt on different devices.

Describe how you would use the layout prop in next/image to make an image responsive.

Consider how the image changes size when the screen changes.