How this test works
Uses Screen, Window and VisualViewport values exposed by the browser.
Browser-reportedPrecision label
P0 browser diagnostic
Screen Resolution Test
Read browser-visible screen, viewport, device-pixel-ratio and orientation metrics.
Browser-reportedBrowser-nativeLocal processing
RS
Interactive test
Resolution diagnostic
◆Stays on deviceNo raw hardware upload
Your data flow
No special permission is requested and results remain local.
Read the privacy overview →What this cannot prove
- CSS dimensions can differ from native panel resolution.
- Display scaling, zoom and privacy rounding affect values.
Fix common problems
- Check browser zoom and OS scaling.
- Move this window to the target monitor.
- Use display settings for native panel details.