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
  );
}

Specification

Specification	Status	Comment
CSS Object Model (CSSOM) View Module The definition of 'window.resizeTo()' in that specification.	Working Draft

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`resizeTo`	Chrome Full support Yes	Edge Full support 12	Firefox Full support Yes Notes Full support Yes Notes Notes 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.	IE ?	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes

Legend

Full support: Full support
Compatibility unknown: Compatibility unknown
See implementation notes.: See implementation notes.

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.