Click to enter fullscreen
Check for dead pixels, bright spots and dark spots
Black Screen Test
Inspect backlight bleed, OLED black levels, IPS glow, and bright or stuck pixels against a dark background. Fullscreen on monitors, phones, tablets, and TVs — then download a black wallpaper PNG if you need a still reference.
Black Screen Test
Inspect backlight bleed, OLED black levels, IPS glow, and bright or stuck pixels against a dark background. Fullscreen on monitors, phones, tablets, and TVs — then download a black wallpaper PNG if you need a still reference.
Full black screen online
Instant full black screen in any browser — no video file or app needed. Tap the preview on phone or desktop for a true #000000 fullscreen test.
Black screen test
A pure black background is the standard way to find bright stuck pixels and hot spots — they glow against #000000 when subpixels should be off.
OLED pixel test
On OLED and AMOLED panels, a true black screen turns pixels off. Any persistent dot or glow may indicate a stuck subpixel or image retention.
Blank black screen wallpaper
Download a black screen wallpaper at 1080p, 4K, or custom dimensions as a PNG for OLED-friendly backgrounds, presentations, or video editing.
About Black Screen Test
Use a free fullscreen black screen test to inspect backlight bleed, IPS glow, OLED black levels, bright pixels, and display uniformity.
Black screen for display diagnostics
On OLED displays, a full black frame should turn subpixels off entirely. Any persistent glow may indicate image retention or a faulty pixel.
OLED black screen test — what bright dots mean
An OLED black screen test reveals bright stuck pixels that stay lit when the panel should be fully dark. They appear as white, red, green, or blue pinpoints on pure black.
Bright spots on iPhone, MacBook, and monitor black screen
Bright spots on an iPhone or MacBook black screen often indicate stuck subpixels or backlight bleed on LCD models. On OLED iPhones, persistent dots on black usually mean a stuck pixel worth noting for warranty.
How to use the black screen
Inspect backlight bleed, OLED black levels, IPS glow, and bright or stuck pixels against a dark background. Fullscreen on monitors, phones, tablets, and TVs — then download a black wallpaper PNG if you need a still reference.
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Open this page on desktop, MacBook, iPhone, iPad,…
Open this page on desktop, MacBook, iPhone, iPad, or any modern mobile browser.
Tip Use ← → to switch colors in the picker
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Click Enter fullscreen or tap the preview for a p…
Click Enter fullscreen or tap the preview for a pure black screen.
Tip Press F or click the preview for fullscreen
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Run a black screen test for bright stuck pixels,…
Run a black screen test for bright stuck pixels, download a wallpaper PNG, or use Start pixel test to cycle colors automatically.
Tip Press Esc to exit fullscreen
Core testing tools
Continue your display QA with these linked diagnostics.
Dead pixel test → Solid-color fullscreen frame-by-frame scan. Detects bright, dark, and stuck pixels — the essential first step. Backlight bleed test → Pure black fullscreen in a dark room to detect LCD leakage and IPS glow. Color calibration test → Gamma ramps and greyscale steps for accuracy checks. Color gamut test → sRGB vs Display P3 patches for wide-gamut verification. Refresh rate test → Real-time Hz detection to verify your panel's actual refresh rate. Ghosting test → Moving blocks for response time and grey-to-grey transition speed. Uniformity test → Grey fields and grid overlay for vignette and tint checks. Display test center → Hub for customizable display QA — gradients, HDR, flicker, and more.
Black screen tips
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Black screen for display diagnostics
VA panels may show elevated black levels compared to IPS — comparing black and white fullscreen views helps evaluate your panel type.
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OLED black screen test — what bright dots mean
Run this test in a dim room at low brightness first, then increase if needed. Follow with our white screen to check for dark dead pixels, or use Start pixel test to cycle all five test colors every 5 seconds.
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Bright spots on iPhone, MacBook, and monitor black screen
For monitors, clouding or corner glow on a black screen test is common on IPS panels — distinguish that from single-pixel stuck dots, which stay in a fixed location every time.
Specialized testing workflows
Step-by-step guides for devices, panel types, and color testing.
Fullscreen color test guide → Setup checklist, color sequence, and common mistakes for solid-field QA. Dead pixel how-to → White, black, and RGB passes with return-window documentation tips. Screen uniformity guide → Grey-field vignette, banding, and dirty-screen effect checks. Resolution & DPR guide → Verify native pixels, viewport, and device pixel ratio before pixel tests. Laptop screen test → 8-step laptop inspection flow. PWM flicker, gamut issues, and panel lottery — all covered. Mobile screen test → OLED burn-in, touch dead zones, PWM flicker — essential for used phone inspection. TV screen test → Mini LED blooming, backlight bleed, MEMC checks — must-do after new TV unboxing. Monitor screen test → IPS, VA, and OLED panel testing, PPI verification, and G-Sync/FreeSync validation. OLED screen test → Burn-in, PWM, ABL, black crush — comprehensive OLED-specific issue coverage. LCD screen test → IPS bleed, VA ghosting, Mini LED blooming — complete LCD panel evaluation.
More screen tools after Black
Choose a solid color for pixel tests, monitor cleaning, chroma key checks, or ambient lighting.
Black screen FAQs
How do I get a full black screen online?
Open this page and click the preview or Enter fullscreen — you get a full black screen online instantly in your browser. No app, video, or download needed to start the test.
How do I use a black screen on my phone?
Open this page on iPhone or Android, tap the preview for fullscreen, and inspect the panel in a dim room. Bright dots on a black screen phone test usually indicate stuck subpixels on OLED or LCD.
Can I download a black screen wallpaper HD?
Yes. Choose 1080p, 4K, 8K, or custom dimensions, then click Download PNG to save a black screen wallpaper HD file or black screen photo to your device.
What is a black screen test for?
A black screen test fills your display with pure black (#000000) so bright stuck pixels, hot spots, and backlight bleed show up clearly. It is the standard second step after a white screen test in any pixel check.
How do I run a black screen test for stuck pixels?
Enter fullscreen and look for bright dots on the pure black background. Click Start pixel test to auto-cycle black, white, red, green, and blue, or compare with our white screen for dark dead pixels.
Is this a black screen video download?
No. TestMyGears is an interactive full black screen tool — not a black screen video file. You can download a static black screen photo PNG, or use fullscreen mode for live pixel testing.
How does an OLED black screen test work?
OLED panels turn individual pixels off for true black. If a dot remains visible, that subpixel may be stuck on. Test in a dark room for best results.
Why do I see bright spots on my iPhone black screen?
Bright spots on an iPhone black screen are usually stuck subpixels that fail to turn off. Note their position and compare after a restart; persistent dots may qualify for a display warranty check.
Is this a white noise black screen for sleep?
No. TestMyGears shows a solid black screen for display testing only — no audio or white noise. Use a dedicated sleep-sounds app for that; use our black screen to test pixels and contrast.
Black Screen Test
Inspect backlight bleed, OLED black levels, IPS glow, and bright or stuck pixels against a dark background. Fullscreen on monitors, phones, tablets, and TVs — then download a black wallpaper PNG if you need a still reference.
