Window: resizeTo() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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

Syntax

js
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.).

Return value

None (undefined).

Examples

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

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

Specifications

Specification
CSSOM View Module
# dom-window-resizeto

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
resizeTo

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
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.

Note: This function might not resize the window synchronously. In some environments (like mobile) it might not resize the window at all. You can listen to the resize event to see if/when the window got resized.

See also