Tips for setting up a full-size image with nextJS and the <Image /> component

Upgrading NextJS to the latest version has resulted in some errors when using the Image component:

// import Image from 'next/image'
<div style={Object.assign({}, styles.slide, style)} key={key}>
  <Image
    src={src}
    alt=""
    width={100 + '%'}
    height={100 + '%'}
    objectFit="cover"
  />
</div>
  1. 'objectFit' is now considered deprecated
  2. The type 'string' cannot be assigned to type 'SafeNumber'

What is the correct method for configuring the image with 100% width and height?

Answer №1

For some reason, Nextjs has made it a bit tricky to set the width and height of an image to 100%. I found a solution that worked for me:

<div style={{ width: "100%", height: "300px", position: "relative" }} >
  <Image src={Your_image} alt="Hero-image" fill />
</div>

This will give you 100% width, but you may need to adjust the height manually. You could try using height: 100%, but I can't guarantee it will work.

If you need to modify the object-fit property for the image, consider using a classname or inline-style since the ObjectFit prop is no longer supported in Next v13 (it handles this automatically now).

<Image src={Your_image} alt="Hero-image" fill style={{ objectFit: "cover" }} />

Answer №2

I recently upgraded from nextjs 12 to 13 and encountered some issues. After running

npx @next/codemod@latest next-image-to-legacy-image ./pages
followed by
npx @next/codemod@latest next-image-experimental ./pages
, I still faced the error
Type '"523px"' is not assignable to type 'SafeNumber | undefined'.
. However, a inline style was effortlessly added:

style={{
      maxWidth: '100%',
      height: 'auto',
}}

This method seems to be effective in setting the width and height accordingly.

Answer №3

To ensure the image fills the container, set the width to 100% within the styles property:

  <Image
    src={src}
    alt=""
    width={width}
    height={height}
    style={{ width: '100%', height: 'auto' }}
  />

An error occurs because 'string' cannot be assigned to type 'SafeNumber'

Be certain that you are passing a valid Number

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