Window Management API browser support

The Window Management API lets a page learn whether the device has more than one screen (window.screen.isExtended) and, after the user grants the window-management permission, read per-screen details through window.getScreenDetails() to place windows precisely. isExtended reports false whenever the window-management Permissions Policy blocks the API, even on a multi-screen device, and each window.open() call still needs its own user gesture.

The table covers the API as recorded in MDN browser-compat-data.

• Legend
• Yes
• Partial
• Flag
• No
• Unknown

Browser / Platform	Support	Versions	Confidence	Source	Notes
Chrome (Desktop)	Yes	100	high	source	—
Chrome (Android)	Yes	100	high	source	1
Edge (Desktop)	Yes	100	high	source	2
Firefox (Desktop)	No	—	high	source	3
Firefox (Android)	No	—	high	source	45
Safari (macOS)	No	—	high	source	6
Safari (iOS)	No	—	high	source	78
Samsung Internet	Yes	19.0	high	source	9
WebView (Android)	Yes	100	high	source	10

1. Derived by browser-compat-data mirroring from Chrome.
2. Derived by browser-compat-data mirroring from Chrome.
3. No Firefox support is recorded in browser-compat-data.
4. No Firefox for Android support is recorded in browser-compat-data.
5. Derived by browser-compat-data mirroring from Firefox.
6. No Safari support is recorded in browser-compat-data.
7. No Safari on iOS support is recorded in browser-compat-data.
8. Derived by browser-compat-data mirroring from Safari.
9. Derived by browser-compat-data mirroring from Chrome Android.
10. Derived by browser-compat-data mirroring from Chrome Android.

Source data: /compatibility/window-management.json · Global usage: 72 % (StatCounter 2026-05)

Source: spec · MDN · Last verified 2026-10-03 · Confidence: high (computed from sources)

See also

• Window Management API: placing windows across multiple screens
• Window Management (w3c.github.io)
• Window Management API (developer.mozilla.org)