Window.resizeTo()

The Window.resizeTo() method dynamically resizes the window.

Syntax

window.resizeTo(width, height)

Parameters

width: An integer representing the new outerWidth in pixels (including scroll bars, title bars, etc).
height: An integer value representing the new outerHeight in pixels (including scroll bars, title bars, etc).

Example

This function resizes the window so that it takes up one quarter of the available screen. See the Screen.availWidth and Screen.availHeight properties.

function quarter() {
  window.resizeTo(
    window.screen.availWidth / 2,
    window.screen.availHeight / 2
  );
}

Specifications

Specification
CSSOM View Module (CSSOM View) # dom-window-resizeto

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`resizeTo`	1	12	1 Since Firefox 7, it's no longer possible for a web site to change the default size of a window in a browser if the window wasn't created by `window.open` or contains more than one tab. See here for more details.	4	≤12.1	1	1	18	4	≤12.1	1	1.0

Note: It's not possible to resize a window or tab that wasn’t created by window.open(). It's also not possible to resize when the window has multiple tabs.