HDR Test
- DisplayHDR 400 — entry, meaningless without dimming
- DisplayHDR 600 — requires local dimming
- DisplayHDR 1000/1400 — true HDR
- True Black 400/500/600 — OLED only
Professional HDR Test
Auto detection
Reads screen.colorDepth, color-gamut and dynamic-range media queries in one second.
Wide gamut check
P3 / Rec.2020 media queries verify the panel meets HDR content requirements.
Tier reference
VESA DisplayHDR 400→1400 and True Black tiers cut through marketing language.
What Is HDR?
PQ EOTF
The perceptual quantizer curve of HDR10, encoding absolute luminance up to 10,000 nits.
Local dimming
Independent Mini LED zones are the core of HDR; more zones, less blooming.
ABL
OLED Auto Brightness Limiter dims full-screen whites to protect the panel.
How to Use
Read the detection card
Color depth, gamut and dynamic-range support load automatically.
Compare with tiers
Match the result with your DisplayHDR certification for real capability.
Study the gradient
An HDR panel shows more highlight levels; flat means HDR is off in the OS.
HDR Panel Types
Mini LED
1000+ zones
- + 1000nit+ peak
- + No burn-in
- − Blooming
- − Thick
OLED
Pixel-level dimming
- + Infinite contrast
- + True Black
- − ABL limiting
- − Burn-in risk
Edge-lit IPS
Fake HDR zone
- + Cheap
- − Worse than SDR in HDR
QD-OLED
Flagship hybrid
- + Largest color volume
- + Clean highlights
- − Expensive
Optimization Tips
Windows: Settings → Display → HDR on, then run the official HDR calibration app.
Tune the SDR brightness slider for everyday browsing under HDR mode.
Only bother with HDR gaming if your panel peaks at 600nit or more.
On macOS enable High Dynamic Range for external HDR displays.
FAQ
Test Environment
- Use the latest Chrome / Edge / Safari
- Enable HDR at OS level first
- Cable must be HDMI 2.0+ / DP 1.4+
- Judge shadow detail in a dark room
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