#Background image from getImage with fallback images
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Based on the information provided in the extracts, the getImage() function in Astro is used to generate images that are intended to be used somewhere other than directly in HTML, such as in an API Route. It can also be used to create a custom <Image /> component. However, there is no mention of it being able to produce fallback images when used for a background image.
The getImage() function takes an options object with properties similar to the Image component, and it returns an object with properties such as src (path to the generated image), options (original parameters passed), and attributes (additional HTML attributes needed to render the image). The format property in the options object is used to specify the format of the image to be generated, and it seems to only allow for one format at a time.
Here is an example of how getImage() is used:
import { getImage } from "astro:assets";
import myBackground from "../background.png"
const optimizedBackground = await getImage({src: myBackground, format: 'webp'})
<div style={`background-image: url(${optimizedBackground.src});`}></div>
In this example, getImage() is used to generate an optimized version of a background image in the 'webp' format. The generated image is then used as a background image in a div element.