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.
Black screen test
Open a free full black screen online — run a black screen test on your phone or monitor, download a black screen wallpaper HD PNG, and find bright stuck pixels on OLED and LCD panels.
Klicken für Vollbild
Wechselt alle 5 s: Weiß, Schwarz, Rot, Grün, Blau. Am besten im Vollbild. Alle Display-Tests →
Auflösungsvoreinstellung
Anleitung
- Open this page on desktop, MacBook, iPhone, iPad, or any modern mobile browser.
- Click Enter fullscreen or tap the preview for a pure black screen.
- Run a black screen test for bright stuck pixels, download a wallpaper PNG, or use Start pixel test to cycle colors automatically.
Warum einen Black-Bildschirm nutzen?
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.
Contrast check
Alternating with our white screen gives a quick visual estimate of perceived contrast and black levels on IPS, VA, and OLED panels.
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.
VA panels may show elevated black levels compared to IPS — comparing black and white fullscreen views helps evaluate your panel type.
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.
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.
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.
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.
Weitere Bildschirm-Tools
White-Bildschirm für Display-Test
Vollbild-white-Hintergrund öffnen
Red-Bildschirm für Display-Test
Vollbild-red-Hintergrund öffnen
Green-Bildschirm für Display-Test
Vollbild-green-Hintergrund öffnen
Blue-Bildschirm für Display-Test
Vollbild-blue-Hintergrund öffnen
Yellow-Bildschirm für Display-Test
Vollbild-yellow-Hintergrund öffnen
Orange-Bildschirm für Display-Test
Vollbild-orange-Hintergrund öffnen
Pink-Bildschirm für Display-Test
Vollbild-pink-Hintergrund öffnen
Purple-Bildschirm für Display-Test
Vollbild-purple-Hintergrund öffnen
Grey-Bildschirm für Display-Test
Vollbild-grey-Hintergrund öffnen
FAQ
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.