When src is valid and loads correctly, Image component renders an img element as if it was rendered natively with auto width and height. With the default browser behaviour that's likely to result in suboptimal quality on retina screens:
To improve the quality, make sure to either define the image size manually or use srcSet attribute. Note that we pass different image assets here for different pixel densities and browser will automatically pick which one to download:
You can pick the correct borderRadius for the Image based on the design tokens to better visually align it with the surrounding components. For circular images, Avatar component can be used instead.
You can pass a specific width and height to the Image to easier control how it's used in the layout. These values work with any CSS values and support responsive syntax, which means you can change the Image size per viewport.
Another way to define the Image size is to use it together with AspectRatio utility. In that case AspectRatio will define the Image sizes based on the passed ratio value and will apply cover display mode by default.
Image provides multiple fallback options that are shown based on the sizes defined for the image-retina. Using them is helpful whenever and error happens during the Image load or src is not available in your data source. In both cases you might want to show a placeholder.
When fallback is passed as a boolean, Image will just render a background.
When fallback is passed as a string, Image will use it as a URL for a fallback image-retina. In this case another image will try loading instead of the original one.
When fallback is passed as ReactNode, it will be used as a slot to render any component. For example, it can be used to render placeholder icons or error messages.
Note that fallback won't be visible if Image doesn't have its sizes defined or is not using AspectRatio.
We recommend using alt property for most of the images as long as you have a way to provide meaningful description for the screen reader users. If alt is not passed, Image will be treated as decorative and will use presentation role.