Fullscreen Test
Use this when games, video players, presentations, or display tests refuse to enter fullscreen.
Browser & device environment
Ready
DeviceOK reports only information your browser intentionally exposes. It does not fingerprint hidden hardware or claim access to protected system details.
What happened?Choose the result you observed.
Privacy: No device data leaves the browser.
What this test tells you
This test checks
- Fullscreen API availability
- User-gesture fullscreen request
How to read the result
A successful test proves fullscreen works for DeviceOK in this browsing context.
Embedded frames, browser policies, or a particular app can still restrict fullscreen independently.