How to use the screen test
- 1
Choose Read screen information.
- 2
Review physical screen and browser viewport values.
- 3
Resize or rotate the device and rerun if you need updated values.
Screen Test
Check screen and browser display information including resolution, available area, viewport, pixel ratio, color depth, orientation, and fullscreen support.
✓Runs locally in your browser — no account or uploads required.
Interactive browser testResults stay in this session
Browser diagnostic
Ready when you are.
Understanding your screen result
Check screen and browser display information including resolution, available area, viewport, pixel ratio, color depth, orientation, and fullscreen support.
The result records only values the browser measured or checks you explicitly confirmed. Unsupported and unavailable values are labeled honestly rather than estimated or invented.
Troubleshooting
Resolution differs from specifications
Operating-system scaling and browser zoom affect CSS pixel values.
Orientation is unavailable
Some desktop browsers do not expose a meaningful orientation type.
Fullscreen is blocked
Fullscreen requires user interaction and may be disabled in embedded browsers.
Screen Test FAQ
Does this reveal private monitor information?
No. It uses ordinary display values exposed to webpages.
Why is viewport smaller than screen resolution?
Browser controls and window size reduce the content viewport.
Build a complete report
Run Full Device Check →Test the rest of your device
Continue through all 13 core checks in one guided session and download a private PDF report.