useDevicePixelRatio

Demo

Device Pixel Ratio

pixelRatio: 1

Zoom in and out (or move the window to a screen with a different scaling factor) to see the value changes

Usage

import { useDevicePixelRatio } from '@vueuse/core'

export default {
  setup() {
    const { pixelRatio } = useDevicePixelRatio()

    return { pixelRatio }
  },
}

Component Usage

This function also provides a renderless component version via the @vueuse/components package. Learn more about the usage.

vue

<template>
  <UseDevicePixelRatio v-slot="{ pixelRatio }">
    Pixel Ratio: {{ pixelRatio }}
  </UseDevicePixelRatio>
</template>

Type Declarations

typescript

/**
 * Reactively track `window.devicePixelRatio`.
 *
 * @see https://vueuse.dev.org.tw/useDevicePixelRatio
 */
export declare function useDevicePixelRatio(options?: ConfigurableWindow): {
  pixelRatio: Readonly<Ref<number, number>>
  stop: () => void
}
export type UseDevicePixelRatioReturn = ReturnType<typeof useDevicePixelRatio>