BrightPixels

Display lab · loading

See what your
screen can do.

Compare ordinary white, wide-gamut color, and HDR on the display you actually use.

  1. Move this window onto the display you want to test.
  2. Compare the samples with HDR on and off.
  3. Record what you see and copy the report.

The browser can report capabilities and renderer state. It cannot measure physical brightness or identify your monitor. A screenshot does not prove HDR output.

The multiplier is a signal request, not a measurement of screen brightness. Reference samples stay unchanged.

01 / Light

Brighter than reference white?

Reference whiteOrdinary CSS white
HDR whiteRenderer initializing…
Bright
Reference text
Bright
HDR text

02 / Color

A wider palette. Extra light.

sRGB orangeStandard gamut, ordinary brightness
Display P3 orangeWide gamut, ordinary brightness
Display P3 + HDRWide gamut with extra light

Compare the first two for color, and the last two for brightness. Unsupported displays or browsers may map them to similar colors.

03 / Highlights

The same image, two outputs.

Polished metal ring with studio reflections
Original image
The same metal ring with HDR highlights
BrightPixels highlights

04 / Motion

Steady, moving, or one pulse.

65%

Motion starts only when you choose it. Reduced-motion settings are respected.

05 / Reported capabilities

Signals, not a brightness meter.

“HDR renderer active” means the extended-range WebGPU renderer initialized. It does not establish the display’s output in nits.

06 / Your observation

Make the result repeatable.

Display setup
What you see on this screen

Nothing is sent automatically. Review the report before sharing it.

The report includes browser information, screen/window dimensions, component states, test settings, and the observations you enter. It does not include a device identifier or your browsing history.