@unpic/vue
ascorbic/unpic-imgA high-performance, responsive image component for Vue.
Installation and usage
npm install @unpic/vue
<script setup lang="ts">
import { Image } from "@unpic/vue";
</script>
<template>
<Image
src="https://cdn.shopify.com/static/sample-images/bath_grande_crop_center.jpeg"
layout="constrained"
width="800"
height="600"
alt="A lovely bath"
/>
</template>
Props
The component accepts all the props of an <img>
tag, plus the following:
layout
The resizing behaviour of the image.
constrained
: (default) the image will be rendered at a maximum ofwidth
andheight
, but will scale down automatically if the container is smaller, maintaining the aspect ratio.fullWidth
: the image will be rendered at full width of its container. This is optimized for full-width hero images. You can setheight
to a fixed value, which will mean the image will be rendered at that fixed height and scale horizontally to fill the container.fixed
: the image will be rendered at the exact size specified bywidth
andheight
priority
By default, images are loaded lazily. If priority
is set to true
, the image will be loaded eagerly, and will be given high priority by the browser. This is useful for images that are above the fold, particularly large ones such as hero images.
background
Either an image URL, CSS gradient or CSS colour value. If set to auto
, a low-resolution version of the image will be rendered as a background image, with a blurred placeholder effect. This is still loaded from the remote server, so if you can instead provide an inline base64-encoded version of the image or background colour, you should do that instead. Look at @unpic/placeholder
for a library that can generate these placeholders.
Bear in mind that this is not removed after the image loads, so it will be visible if the image has transparency.
aspectRatio
Instead of specifying both width
and height
, you can specify can aspectRatio
.
cdn
By default the CDN is auto-detected from the src
URL. If you want to override this, you can specify a CDN object. See the unpic for supported values.
breakpoints
By default the image breakpoints used in the srcset
are generated based on the layout and image size. You can override this by specifying an array of breakpoints. The breakpoints are specified as an array of numbers, representing the width of the image in pixels.
Other props
Any prop supported by <img>
tags can be passed in, except srcset
which is generated from src
. The following props are set automatically, but can be overridden if you need to:
sizes
role
decoding
loading
fetchpriority