HDR Monitor Test — Check HDR Capability & Contrast
Evaluate browser High Dynamic Range software capabilities, peak highlight luminance expansion, and Wide Color Gamut rendering.
HDR Software Pipeline vs Physical Panel Hardware
Operating system flags (such as Windows HDR or macOS HDR video) enable the 10-bit/12-bit tone mapping pipeline. However, true HDR visual impact depends entirely on physical hardware:
- OLED / QD-OLED: Infinite contrast ratio with per-pixel local dimming.
- Mini-LED: Hundreds to thousands of localized full-array dimming zones with 1000+ nits peak brightness.
- Standard Edge-Lit LCD: Cannot dim individual scene regions, resulting in elevated dark levels.
Frequently Asked Questions
How does this test check browser HDR capability?
The test queries CSS media feature APIs including (dynamic-range: high), (color-gamut: p3), and (color-gamut: rec2020) to check whether your operating system and browser compositor have enabled High Dynamic Range color pipelines.
Does browser HDR support guarantee great HDR image quality?
No. Browser support only confirms the software pipeline is enabled. True HDR visual quality requires physical panel hardware with high peak brightness (600–1000+ nits), wide color coverage (90%+ DCI-P3), and per-pixel local dimming (OLED or Mini-LED).
Why do HDR games or videos look washed out on some monitors?
Entry-level "HDR400" edge-lit LCD monitors lack local dimming. When HDR is turned on, the monitor runs its global backlight at 100%, raising black levels to grayish tones and washing out contrast.
Related HDR Tools
Ver as 25 Ferramentas →Contrast Test
StepsEvaluate black level depth, white saturation, shadow detail retention, and step gradients.
Color Test
GamutVerify RGB/CMYK color reproduction, primary chromaticity, and wide color gamut (sRGB, DCI-P3, Rec.2020).
Color Banding Test
BitDetect visible stair-stepping and posterization in subtle color and grayscale gradient ramps.
Gamma Test
γVerify display gamma curve (Gamma 1.8, 2.2, 2.4) using alternating subpixel luminance patterns.
Monitor Test
ScoreMulti-stage screen assessment covering geometry, color gamut, gradients, text clarity, and contrast.