Screen Diagnostic Tool: how to use the result
The screen diagnostic brings several visual references into one workspace: solid colors, gradients and a grid. It helps you describe what you see when investigating banding, uneven appearance or geometry. It does not read panel electronics or compare the screen against a calibrated color standard, so the patterns support observation rather than an automated diagnosis.
How to use this workspace
- Choose a pattern that matches the question: solids for small spots, gradients for transitions and a grid for visual alignment.
- View it at a comfortable brightness and inspect the center and edges without changing several settings at once.
- Exit the overlay and repeat with another pattern if the same issue needs a second reference.
A practical example
If a grayscale gradient appears stepped, compare another gradient and normal image content before drawing a conclusion. The visible steps may depend on rendering, display settings, color processing or the panel. This page provides a repeatable reference, but cannot isolate which part of that chain produced the effect.
How to interpret your result
Use the patterns to write a precise description such as “visible steps in this gradient under these settings.” That is more useful than treating the pattern as a pass-or-fail score. The grid is a geometric reference, not a physical ruler or a measurement of pixel pitch.
Common mistakes and limits
Browser zoom, system scaling, viewing angle and color management can affect the result. The test does not calibrate brightness or color, measure contrast, identify burn-in automatically or establish a response-time specification.
Make the comparison repeatable
Test one condition at a time and note which device, browser and connection you used. If an unexpected result appears, repeat the same action before changing settings. A second browser or another known-working peripheral can help separate an application or permission problem from a device problem. Keep those comparisons descriptive: this page observes what reaches the browser and does not have access to a laboratory measurement of the hardware.
Frequently asked questions
Does a smooth gradient prove that the monitor is color accurate?
No. Smooth transitions and color accuracy are different properties. Accurate color measurement requires an appropriate reference and measurement process.
Can I use this on a laptop or television?
You can display the browser patterns on a connected screen. Interpret them in the context of that screen’s settings, scaling and browser support.