Tests and devices

Screen Test

Use color patterns and resolution information for a quick display check.

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How to use

  1. 1Open the test, grant permission only when needed, and review the result in your browser.

About

A local UtilNexo tool for a quick check without sending test data to a server.

Screen Test Online: Colors and Resolution | UtilNexo

Display solid colors and a gradient for a visual screen inspection.

Choose a color, enter fullscreen, and inspect pixels, uniformity, and contrast.

The page reports browser-visible width, height, aspect ratio, and device pixel ratio.

Example use

Choose a color, enter fullscreen, and inspect pixels, uniformity, and contrast.

The page reports browser-visible width, height, aspect ratio, and device pixel ratio.

Example use

  • The page reports browser-visible width, height, aspect ratio, and device pixel ratio.
  • Choose a color, enter fullscreen, and inspect pixels, uniformity, and contrast.

Limits and privacy

  • Tests run in the browser and do not diagnose physical defects.
  • Microphone and webcam require explicit permission; media tracks stop when you stop the test.
  • Results vary with browser, system, and room conditions.

How to use

  1. 1Open the tool and read the guidance.
  2. 2Grant permission only for audio or video tests.
  3. 3Use the indicated area and compare results under the same conditions.

Frequently asked questions

Does it detect defects automatically?

The page reports browser-visible width, height, aspect ratio, and device pixel ratio.

Is data uploaded?

No. Processing is local. Microphone and webcam stay in the browser and are stopped when you stop.

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