Screen Coordinate Tester
See click/tap positions and device-pixel ratio for your active browser viewport.
Play Screen Coordinate Tester
Move the pointer or tap on the coordinate board; review the reported coordinates.
How to play Screen Coordinate Tester
Move the pointer or tap on the coordinate board; review the reported coordinates.
How results are calculated
Local pointer X/Y in CSS pixels plus device pixel ratio.
Accuracy, limitations and fair comparisons
Browser scheduling, device and input differences influence results; recreational only. The challenge runs in your current browser session; compare repeated attempts on the same device for a more useful personal reference.
Questions and answers
Is Screen Coordinate Tester free?
Yes. This activity is free and does not require registration.
Does this test upload my input or score?
No. Gameplay and optional history storage run in your browser on this device; exporting a result requires your own action.
What is the measured result?
Local pointer X/Y in CSS pixels plus device pixel ratio.
Can the result be treated as a medical or hardware diagnosis?
No. Browser scheduling, device and input differences influence results; recreational only.
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