Skip to content
Related Articles

Related Articles

Improve Article

HTML DOM window devicePixelRatio property

  • Last Updated : 14 Jul, 2020

The devicePixelRatio property returns the ratio of the resolution in physical pixels to the resolution in CSS pixels for the current device. In simpler terms, this property also tells the browser how many of the screen’s actual pixels should be used to draw a single CSS pixel. This is a read-only property.


Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof. But before you tackle the big projects, we suggest you start by learning the basics. Kickstart your web development journey by learning JS concepts with our JavaScript Course. Now at it's lowest price ever!

value = window.devicePixelRatio;

Return Value: returns a double-precision floating-point value indicating the ratio of the display’s resolution in physical pixels to the resolution in CSS pixels.

Example: In this example, we will get the ratio using this property.

    <title>window devicePixelRatio property</title>
<body style="text-align:center;">
    <h1 style="color:green;">  
    HTML | window devicePixelRatio property
    <button onclick = "Geeks()">
    Click Here
    <p id="a"
        var a = document.getElementById("a");
        function Geeks() {
        a.innerHTML="devicePixelRatio is :


Before Clicking Button:

After Clicking Button: At standard zoom devicePixelRatio comes out to be 1.25

Supported Browsers:

  • Google Chrome
  • Edge
  • Firefox
  • Safari
  • Opera
  • Internet Explorer

My Personal Notes arrow_drop_up
Recommended Articles
Page :