HDR capability check
Check browser HDR media hints and inspect a high-range pattern.
Display capability report
Checking…
Capability does not prove HDR is active. CSS color depth is not the native panel bit depth. These checks cannot detect HDR10/Dolby Vision certification or measure nits.
No HDR detected? What to check
Check OS and monitor HDR settings, cable and adapter support, and try another browser. Move the window to the target display and check again. No report does not prove the panel lacks HDR.
HDR terminology
- HDR / SDR
- High / standard dynamic range: the range of dark and bright detail.
- nits
- Luminance in cd/m²; requires a measuring instrument.
- DisplayHDR
- VESA display certification; check the exact model in the certification list. It cannot be inferred from browser detection.
- HDR10 / HDR10+ / Dolby Vision / HLG
- HDR content formats. A capability flag does not establish support for all formats.
- Tone mapping
- Mapping content brightness into the display’s available range.
- sRGB / Display P3 / Rec.2020
- Color spaces; reported support is not measured gamut coverage.
What does HDR / SDR mean here?
Read the capability cards, then inspect the explicitly labeled SDR reference pattern.
SDR reference pattern · not HDR luminance output
What do you see?
Read the capability cards, then inspect the explicitly labeled SDR reference pattern.
How to use this test
- Read the capability cards, then inspect the explicitly labeled SDR reference pattern.
- Record what you actually see or calculate; repeat under the same settings.
What does HDR / SDR mean here?
Read the capability cards, then inspect the explicitly labeled SDR reference pattern.
Where is my test data stored?
The test runs on your device. Results are only saved to this browser when you choose Save. Clear them from the report page at any time. Audio and video are never uploaded.