Using image component is just easy as using <img> tag. Just define src, and your image will be there for you.

  <nuxt-image src="/nuxt-icon.png" />

When you define an image with src props, Nuxt automatically calculates aspect ratio of the image and set size of the image based on the aspect ratio. The image's width will be equal to width of parent element in DOM and its height calculates based on the aspect ratio.
Forcing images to preserve aspect ratio will prevent layout shifting. If you want to resize the image all you need is changing the width using CSS.

Don't worry you can control the aspect ratio of the image using width and height props. If you provide both width and height, the aspect ratio will be calculated using the width and height.