Reported color depth and fixed visual levels
Run the test to see a visual synchronized with the current result.
Display Color Depth Test
Read the browser-reported color depth and inspect a fixed 256-level pattern; this page cannot identify the panel's native bit depth.
Settings
Enter a valid value.
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Current conditions
Ready to read the browser-reported value.
Reported color depth and fixed visual levels
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Use and interpret
Choose the tone range and whether to show the dither pattern, then apply the page. Read the reported color depth and inspect the fixed 256-level pattern on the physical display.
Method and validation
The page reads Screen.colorDepth and renders a fixed 256-level-per-channel pattern. The visual pattern is only an observation aid; it does not switch the display's bit depth.
The result is available only when the browser exposes a numeric Screen.colorDepth. A manual observation describes what you see and is not converted into a native bit-depth verdict.
Scope and limitations
A web page cannot read the panel's native precision, internal LUT, FRC, dithering path, link format, or color-management pipeline. Browser and OS output settings can change the reported value.
What does this color-depth result report?
It reports Screen.colorDepth as exposed by the browser and shows a fixed 256-level visual pattern.
Can it prove a native 8-bit or 10-bit panel?
No. It cannot distinguish native precision from an output path, dithering, FRC, or browser and OS reporting.
What is the fixed pattern for?
It provides a controlled visual reference for tonal steps; it is not a selectable 6-, 8-, or 10-bit simulation.
Privacy and implementation
This tool runs in the browser. It does not upload input, call a remote API, or write to local storage.
The page uses standalone HTML, CSS, and JavaScript without a third-party runtime library.