Monitor HDR Test: Does Your Display Support HDR? - Device Checklist | ProbeCheck

Why Test Your Monitor’s HDR Support

HDR (High Dynamic Range) can dramatically improve image quality in games, movies, and creative work — but only if your display actually supports it. Many monitors advertise “HDR” without meeting the brightness or color requirements for a meaningful HDR experience.

A quick browser-based HDR test tells you whether your setup can display HDR content, whether your display supports wide color gamut (Display P3), and what color depth your screen is running at. No software installation required.

What Is HDR?

HDR allows a display to show a wider range of brightness levels — from deeper blacks to brighter highlights — than standard SDR (Standard Dynamic Range). The result is more realistic lighting, better contrast, and more vibrant colors in supported content.

HDR vs SDR

HDR Formats

For monitor testing, HDR10 is the baseline — if your display supports HDR, it supports HDR10.

How to Test HDR Online

Step 1: Open the Screen Test

Launch Screen Test — this runs directly in your browser and detects:

• HDR support (via dynamic-range: high media query)
• Wide color gamut / Display P3 (via color-gamut: p3 media query)
• Color depth (8-bit, 10-bit)
• Screen resolution and pixel density
• Dead pixel detection (full-screen color fills)

Step 2: Check the HDR Status Card

After running the test, look for the HDR status card. It will show one of two results:

HDR Supported — Your display, GPU, and browser all support HDR. You can watch HDR content on YouTube, Netflix, and play HDR games.

HDR Not Supported — One or more components in the chain doesn’t support HDR. See the troubleshooting section below.

Step 3: Check Wide Color Gamut

Wide color gamut (WCG) is separate from HDR but usually paired with it. If your display supports Display P3, colors in HDR content will be richer and more saturated. The screen test checks this independently.

Step 4: Verify with HDR Content

After confirming HDR support with the test, verify with real HDR content:

• YouTube: Search for “HDR 4K demo” — look for the HDR badge
• Netflix: Play any HDR-tagged title (requires Premium plan)
• Games: Launch an HDR-compatible game (Cyberpunk 2077, HDR-enabled mode)

Understanding HDR Test Results

Color Depth

Display P3 Coverage

Display P3 is the color space used by most HDR monitors. It covers more of the visible spectrum than sRGB:

• sRGB: ~35% of CIE 1931 color space (standard for web and SDR)
• Display P3: ~45% of CIE 1931 (used by Apple, HDR monitors)
• Rec. 2020: ~75% of CIE 1931 (future HDR standard, rarely fully covered)

If your display reports P3 support, it can show more saturated reds, greens, and cyans than a standard sRGB monitor.

Brightness and DisplayHDR Certification

The browser-based test cannot measure brightness directly, but you can check your monitor’s DisplayHDR certification:

If your monitor is not DisplayHDR certified, check the manufacturer’s specs for peak brightness. Anything below 400 nits provides little HDR benefit.

HDR Setup by Platform

Windows 11

1. Open Settings > Display > HDR
2. Toggle Use HDR to On
3. Adjust SDR content brightness slider (this controls how bright SDR content appears in HDR mode)
4. For gaming: enable Auto HDR for automatic HDR in supported games
5. Run the Screen Test to verify detection

Note: Windows HDR mode can make SDR content (web pages, office apps) look washed out. Adjust the SDR brightness slider or use Windows 11’s HDR Calibration app for best results.

Windows 10

1. Open Settings > Display > Windows HD Color
2. Toggle Play HDR games and apps to On
3. Run the Screen Test to verify

Windows 10 HDR support is more limited than Windows 11. Consider upgrading for Auto HDR and better SDR handling.

macOS

macOS enables HDR automatically on compatible displays:

1. Connect your HDR monitor via USB-C, DisplayPort, or HDMI 2.0+
2. Open System Settings > Displays
3. If the display supports HDR, it will be enabled automatically
4. Adjust the HDR brightness slider if available

Note: Safari supports HDR on YouTube and Netflix. Chrome and Firefox on macOS may not detect HDR correctly in the browser test — use Safari for the most accurate results.

Linux

HDR support on Linux varies by desktop environment:

• KDE Plasma 6+: Full HDR support with Wayland
• GNOME: Limited HDR support (experimental)
• X11: HDR not supported (use Wayland)

To test: ensure you’re running a Wayland session with a compatible GPU driver (Mesa 23+, NVIDIA 530+).

Common HDR Issues

Issue: Browser Says HDR Not Supported

Checklist:

1. Monitor: Is HDR enabled in the monitor’s OSD (on-screen display)?
2. Cable: Are you using HDMI 2.0+ or DisplayPort 1.4+? Older cables can’t carry HDR signals.
3. GPU driver: Is your GPU driver up to date? NVIDIA, AMD, and Intel all require recent drivers for HDR.
4. OS: Is HDR turned on in Windows/macOS display settings?
5. Browser: Are you using a recent version of Chrome, Edge, Safari, or Firefox?
6. Connection: Are you connected to the GPU’s display output, not the motherboard’s?

Issue: HDR Content Looks Washed Out

This is common on Windows when HDR is enabled but SDR content isn’t calibrated:

1. Open Settings > Display > HDR
2. Adjust the SDR content brightness slider until SDR content looks normal
3. Use the Windows HDR Calibration app (from Microsoft Store) for precise tuning
4. Check if your browser has hardware acceleration enabled

Issue: HDR Works in One App But Not Another

Some apps don’t support HDR even if the display does:

• HDR-supported: Netflix, YouTube, Amazon Prime Video, most modern games
• SDR-only: Most web browsers (Safari is the exception), office apps, older games

On Windows 11, Auto HDR can add HDR to older games automatically.

Issue: Colors Look Oversaturated

If colors appear too intense in HDR mode:

1. Check if your monitor has an sRGB mode or color space setting
2. On Windows, use the HDR Calibration app to set correct primaries
3. On macOS, check the display profile in System Settings > Displays
4. Some monitors default to a wide gamut mode that oversaturates SDR content — clamp to sRGB for non-HDR use

HDR for Different Use Cases

Gaming

HDR in games delivers brighter highlights (explosions, sunlight) and darker shadows simultaneously. Test your screen before playing HDR games.

Best HDR games:

• Cyberpunk 2077
• Horizon Forbidden West
• God of War
• Assassin’s Creed Valhalla
• Resident Evil Village

Tip: On Windows 11, enable Auto HDR to get HDR in games that don’t natively support it.

Video Streaming

Streaming services deliver HDR over the web:

Requirements: 25+ Mbps internet for 4K HDR streaming. Use a wired connection or 5GHz Wi-Fi for stability.

Content Creation

For photo and video editing in HDR:

1. Calibrate your monitor with a colorimeter (X-Rite, Datacolor)
2. Use HDR-capable software: DaVinci Resolve, Final Cut Pro, Photoshop (limited)
3. Check color depth: 10-bit minimum for HDR editing
4. Export in HDR10 or Dolby Vision for distribution

General Media Consumption

Even for non-HDR content, a wide color gamut display improves color accuracy. If your monitor supports Display P3 but not HDR, you’ll still see richer colors in photos and videos.

How to Choose an HDR Monitor

If you’re buying a new monitor for HDR:

Minimum Requirements for Meaningful HDR

• Brightness: 600+ nits (DisplayHDR 600)
• Local dimming: FALD (Full Array Local Dimming) or mini-LED
• Color depth: 10-bit (8-bit + FRC is acceptable but not true 10-bit)
• Color gamut: 90%+ DCI-P3 coverage
• Contrast ratio: 1000:1+ (IPS), 3000:1+ (VA), infinite (OLED)

Panel Technology Comparison

Recommended HDR Monitors (2026)

• Best overall: LG C4 OLED (42“, 48“, 55“)
• Best gaming: Samsung Odyssey OLED G9, Alienware AW3225QF
• Best budget HDR: Cooler Master Tempest GP27U (mini-LED, DisplayHDR 600)
• Best for creators: ASUS ProArt PA278CV (P3 coverage, factory calibrated)

Before purchasing, run the Screen Test on your current display to see what you’re missing.

Related Resources

• Screen Test — test HDR, color gamut, resolution, and dead pixels
• Used Laptop Buying Guide — check screen quality before buying
• Complete Guide to Keyboard Latency Testing — optimize gaming input lag
• Best Polling Rate for FPS Games — mouse performance for competitive gaming

HDR detection is based on browser media queries and reflects your current display configuration. Results may vary depending on browser, GPU driver, and operating system settings. For the most accurate HDR verification, test with actual HDR video content.