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 }
  },
}

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.

html

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

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

Type Declarations

typescript

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

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