Firefox Tomorrow

web api instance property

ScreenDetailed: devicePixelRatio property

View on MDN ↗

Limited availabilitySecure context

The devicePixelRatio read-only property of the ScreenDetailed interface is a number representing the screen’s device pixel ratio.

This is the same as the value returned by devicePixelRatio, except that Window.devicePixelRatio:

  • always returns the device pixel ratio for the current screen.
  • also includes scaling of the window itself, i.e., page zoom (at least on some browser implementations).

Value

A number.

Examples

const screenDetails = await window.getScreenDetails();

// Return the device pixel ratio of the first screen
const screen1DPR = screenDetails.screens[0].devicePixelRatio;

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also