Device postureLimited availability
The device posture API and the device-posture CSS media feature reflect the physical posture of a device, such as whether a foldable device is folded or unfolded.
Not yet supported in all major browsers — check the table and provide a fallback.
Browser support
DesktopChrome
1–131Not supported
132+Supportedsince Jan 14, 2025
Current: 155Edge
12–131Not supported
132+Supportedsince Jan 17, 2025
Current: 154Firefox
✕Not supportedup to 157
Current: 157Safari
✕Not supportedup to 27
Current: 27MobileChrome Android
18–131Not supported
132+Supportedsince Jan 14, 2025
Current: 155Firefox Android
✕Not supportedup to 157
Current: 157Safari iOS
✕Not supportedup to 27
Current: 27How to use
Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.
Example
Full syntax and examples are on MDN: DevicePosture.
Feature detection
JS · check before using
if ("DevicePosture" in globalThis) {
// DevicePosture is available
} else {
// load a polyfill or use a fallback
}Documentation (MDN)
Specification
Sub-features
Support for each part of the feature (5). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| DevicePosture | 132 | 132 | ✕ | ✕ | 132 | ✕ | ✕ |
| DevicePosture.change_event | 132 | 132 | ✕ | ✕ | 132 | ✕ | ✕ |
| DevicePosture.type | 132 | 132 | ✕ | ✕ | 132 | ✕ | ✕ |
| Navigator.devicePosture | 132 | 132 | ✕ | ✕ | 132 | ✕ | ✕ |
| @media.device-posture | 132 | 132 | ✕ | ✕ | 132 | ✕ | ✕ |