Get the size of the screen, current web page and browser window

0 votes
asked Aug 9, 2010 by turtledove

How can I get windowWidth, windowHeight, pageWidth, pageHeight, screenWidth, screenHeight, pageX, pageY, screenX, screenY which will work in all major browsers?

screenshot describing which values are wanted

14 Answers

0 votes
answered Aug 9, 2010 by ankit-jaiswal

If you are using jQuery, you can get the size of the window or the document using jQuery methods:

$(window).height();   // returns height of browser viewport
$(document).height(); // returns height of HTML document (same as pageHeight in screenshot)
$(window).width();   // returns width of browser viewport
$(document).width(); // returns width of HTML document (same as pageWidth in screenshot)

For screen size you can use the screen object in the following way:

0 votes
answered Aug 11, 2012 by dude
function wndsize(){
  var w = 0;var h = 0;
    if(!(document.documentElement.clientWidth == 0)){
      //strict mode
      w = document.documentElement.clientWidth;h = document.documentElement.clientHeight;
    } else{
      //quirks mode
      w = document.body.clientWidth;h = document.body.clientHeight;
  } else {
    w = window.innerWidth;h = window.innerHeight;
  return {width:w,height:h};
function wndcent(){
  var hWnd = (arguments[0] != null) ? arguments[0] : {width:0,height:0};
  var _x = 0;var _y = 0;var offsetX = 0;var offsetY = 0;
    //strict mode
    if(!(document.documentElement.scrollTop == 0)){offsetY = document.documentElement.scrollTop;offsetX = document.documentElement.scrollLeft;}
    //quirks mode
    else{offsetY = document.body.scrollTop;offsetX = document.body.scrollLeft;}}
    else{offsetX = window.pageXOffset;offsetY = window.pageYOffset;}_x = ((wndsize().width-hWnd.width)/2)+offsetX;_y = ((wndsize().height-hWnd.height)/2)+offsetY;
var center = wndcent({width:350,height:350});
document.write('<DIV align="center" id="rich_ad" style="Z-INDEX: 10; left:'+center.x+'px;WIDTH: 350px; POSITION: absolute; TOP: '+center.y+'px; HEIGHT: 350px"><!--К сожалению, у Вас не установлен flash плеер.--></div>');
0 votes
answered Aug 31, 2012 by sidonaldson

This is everything you need to know:

but in short:

var w = window,
    d = document,
    e = d.documentElement,
    g = d.getElementsByTagName('body')[0],
    x = w.innerWidth || e.clientWidth || g.clientWidth,
    y = w.innerHeight|| e.clientHeight|| g.clientHeight;
alert(x + ' × ' + y);


0 votes
answered Aug 20, 2013 by danfromgermany

A non-jQuery way to get the available screen dimension. window.screen.width/height has already been put up, but for responsive webdesign and completeness sake I think its worth to mention those attributes:

alert(window.screen.availHeight); :

availWidth and availHeight - The available width and height on the screen (excluding OS taskbars and such).

0 votes
answered Aug 21, 2014 by serfer2

You can also get the WINDOW width and height, avoiding browser toolbars and other stuff. It is the real usable area in browser's window.

To do this, use: window.innerWidth and window.innerHeight properties (see doc at w3schools).

In most cases it will be the best way, in example, to display a perfectly centred floating modal dialog. It allows you to calculate positions on window, no matter which resolution orientation or window size is using the browser.

0 votes
answered Aug 2, 2015 by jave-web

Sometimes you need to see the width/height changes while resizing the window and inner content.

For that I've written a little script that adds a log box that dynamicly monitors all the resizing and almost immediatly updates.

It adds a valid HTML with fixed position and high z-index, but is small enough, so you can:

  • use it on an actual site
  • use it for testing mobile/responsive views

Tested on: Chrome 40, IE11, but it is highly possible to work on other/older browsers too ... :)

  function gebID(id){ return document.getElementById(id); }
  function gebTN(tagName, parentEl){ 
     if( typeof parentEl == "undefined" ) var parentEl = document;
     return parentEl.getElementsByTagName(tagName);
  function setStyleToTags(parentEl, tagName, styleString){
    var tags = gebTN(tagName, parentEl);
    for( var i = 0; i<tags.length; i++ ) tags[i].setAttribute('style', styleString);
  function testSizes(){
    gebID( 'screen.Width' ).innerHTML = screen.width;
    gebID( 'screen.Height' ).innerHTML = screen.height;

    gebID( 'window.Width' ).innerHTML = window.innerWidth;
    gebID( 'window.Height' ).innerHTML = window.innerHeight;

    gebID( 'documentElement.Width' ).innerHTML = document.documentElement.clientWidth;
    gebID( 'documentElement.Height' ).innerHTML = document.documentElement.clientHeight;

    gebID( 'body.Width' ).innerHTML = gebTN("body")[0].clientWidth;
    gebID( 'body.Height' ).innerHTML = gebTN("body")[0].clientHeight;  

  var table = document.createElement('table');
  table.innerHTML = 
      +"<tr><td>screen</td><td id='screen.Width' /><td>x</td><td id='screen.Height' /></tr>"
      +"<tr><td>window</td><td id='window.Width' /><td>x</td><td id='window.Height' /></tr>"
      +"<tr><td>document<br>.documentElement</td><td id='documentElement.Width' /><td>x</td><td id='documentElement.Height' /></tr>"
      +"<tr><td>document.body</td><td id='body.Width' /><td>x</td><td id='body.Height' /></tr>"

  gebTN("body")[0].appendChild( table );

     "border: 2px solid black !important; position: fixed !important;"
     +"left: 50% !important; top: 0px !important; padding:10px !important;"
     +"width: 150px !important; font-size:18px; !important"
     +"white-space: pre !important; font-family: monospace !important;"
     +"z-index: 9999 !important;background: white !important;"
  setStyleToTags(table, "td", "color: black !important; border: none !important; padding: 5px !important; text-align:center !important;");
  setStyleToTags(table, "th", "color: black !important; border: none !important; padding: 5px !important; text-align:center !important;"); 'margin-left', '-'+( table.clientWidth / 2 )+'px' );

  setInterval( testSizes, 200 );

EDIT: Now styles are applied only to logger table element - not to all tables - also this is a jQuery-free solution :)

0 votes
answered Aug 4, 2015 by hashchange

If you need a truly bulletproof solution for the document width and height (the pageWidth and pageHeight in the picture), you might want to consider using a plugin of mine, jQuery.documentSize.

It has just one purpose: to always return the correct document size, even in scenarios when jQuery and other methods fail. Despite its name, you don't necessarily have to use jQuery – it is written in vanilla Javascript and works without jQuery, too.


var w = $.documentWidth(),
    h = $.documentHeight();

for the global document. For other documents, e.g. in an embedded iframe you have access to, pass the document as a parameter:

var w = $.documentWidth( myIframe.contentDocument ),
    h = $.documentHeight( myIframe.contentDocument );

Update: now for window dimensions, too

Ever since version 1.1.0, jQuery.documentSize also handles window dimensions.

That is necessary because

  • $( window ).height() is buggy in iOS, to the point of being useless
  • $( window ).width() and $( window ).height() are unreliable on mobile because they don't handle the effects of mobile zooming.

jQuery.documentSize provides $.windowWidth() and $.windowHeight(), which solve these issues. For more, please check out the documentation.

0 votes
answered Aug 6, 2015 by zoweb

You can use the Screen object to get this.

The following is an example of what it would return:

Screen {
    availWidth: 1920,
    availHeight: 1040,
    width: 1920,
    height: 1080,
    colorDepth: 24,
    pixelDepth: 24,
    top: 414,
    left: 1920,
    availTop: 414,
    availLeft: 1920

To get your screenWidth variable, just use screen.width, same with screenHeight, you would just use screen.height.

To get your window width and height, it would be screen.availWidth or screen.availHeight respectively.

For the pageX and pageY variables, use window.screenX or Y. Note that this is from the VERY LEFT/TOP OF YOUR LEFT/TOP-est SCREEN. So if you have two screens of width 1920 then a window 500px from the left of the right screen would have an X value of 2420 (1920+500). screen.width/height, however, display the CURRENT screen's width or height.

To get the width and height of your page, use jQuery's $(window).height() or $(window).width().

Again using jQuery, use $("html").offset().top and $("html").offset().left for your pageX and pageY values.

0 votes
answered Aug 15, 2015 by akim-kelar

In some cases related with responsive layout $(document).height() can return wrong data that displays view port height only. For example when some div#wrapper has height:100%, that #wrapper can be stretched by some block inside it. But it's height still will be like viewport height. In such situation you might use


That represents actual size of wrapper.

0 votes
answered Aug 22, 2015 by aabha-pandey

But when we talk about responsive screens and if we want to handle it using jQuery for some reason,

window.innerWidth, window.innerHeight

gives the correct measurement. Even it removes the scroll-bar's extra space and we don't need to worry about adjusting that space :)

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