ScreenCheckv1.0
High Dynamic Range & Color Volume
Progressive Fallback

HDR Display Lab

Evaluate High Dynamic Range signaling, specular highlight clipping, Display-P3 wide color gamuts, and tone mapping. Includes dedicated environment verification and clear SDR fallback modes.

Browser-Observed Display Signals

Honest Environmental Telemetry
HDR Signal:Unconfirmed
Color Space:sRGB Standard
DPR / Scale:1x
ResolutionMeasuring...
Color DepthMeasuring...
HDR QueryStandard (SDR)
Canvas P3sRGB Only
Signals represent what your browser engine and OS display pipeline report. Browser APIs cannot directly probe physical panel luminance (nits) or physical colorimeter coverage.
Guided SequenceGuided HDR Display Check (6–8 min)

A continuous workflow testing Environment Signals, HDR Reference Chart, Highlight Clipping, Black Level, and Wide Color Gamut.

Start HDR Diagnostic

Capability & Validation

HDR Environment Check

Audit browser (dynamic-range: high) query, Canvas P3, and pipeline status.

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Tone Mapping & Contrast

HDR Black Level

Inspect near-black threshold steps alongside high dynamic range highlights.

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HDR Shadow Detail

Original synthetic high-contrast scene testing dark shadow preservation.

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Highlight Clipping

Progressively bright digital patches (Levels 240–255) for specular detail.

Open Test

Color Volume & Wide Gamut

Wide Color Gamut Reference

Side-by-side comparison between sRGB and Display-P3 wide color spaces.

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HDR Color Gradient

Saturated primary and secondary color ramps in Display-P3 and sRGB.

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Gradients & Bit-Depth

HDR Gradient & 10-Bit

Evaluate continuous and stepped ramps up to 256 visual quantization steps.

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HDR Banding Inspection

Inspect quantization banding across dark, mid-tone, and highlight regions.

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Reference & Motion

HDR Reference Chart

Comprehensive chart with dark steps, highlight wedges, and geometry.

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HDR Motion Test

Evaluate specular highlight motion clarity on dark backdrops.

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SDR vs HDR Demo

Educational tone-mapping demonstration explaining dynamic range principles.

Open Test