White Screen Test
A blank white screen online for dead pixel detection, screen uniformity check, and Zoom/Meet lighting. Open full screen white display directly in your browser — no download needed.
Or press F11 · Mobile: double-tap
How to Use
Dead Pixel Detection
This free dead pixel checker uses a blank white screen to make faults immediately visible — dead pixels appear as dark spots, and stuck pixels as colored dots. View the full screen white display in a dimly lit room for best results. Scan all areas slowly, especially corners and edges where pixel failures are most common.
Video Call Lighting Tip
Use this white screen online as a free ring light alternative. Place your monitor or tablet with a full screen white background in front of or beside you during Zoom, Google Meet, or Teams calls. Set brightness to 70–85% to provide soft, even facial lighting without eye strain.
Frequently Asked Questions
What is a white screen test?▼
A white screen test displays a pure white full-screen image to help you detect dead pixels, stuck pixels, or screen uniformity issues. Any dark spot visible on a bright white background indicates a potential pixel problem.
How do I check for dead pixels?▼
Enter fullscreen mode and carefully scan the entire screen. Dead pixels appear as permanently black dots. Stuck pixels appear as small colored dots (usually red, green, or blue). Check corners and edges closely.
Can I use this for video call lighting?▼
Yes. A bright white screen at 70–85% brightness acts as a soft light source for your face during video calls. Position the screen 30–60cm away, facing you at eye level for the most flattering results.
Can I use this as a plain white screen on my computer monitor?▼
Yes. This white screen website works on any computer monitor, laptop, tablet, or phone. Just open the page and click fullscreen — your entire display becomes a plain white screen instantly. Works on PC, Mac, Chromebook, and mobile.
Is there a 24 hour white screen I can play?▼
Yes. You can keep this white screen page open for as long as you need — including 24 hours or more. It runs entirely in your browser with no timeout. Use it as a 24 hour white screen for ambient lighting, photography backdrops, or continuous dead pixel monitoring. Just make sure your display sleep settings are turned off.
What is a completely white screen used for?▼
A completely white screen is used for dead pixel detection, screen uniformity testing, video call lighting, photography backdrops, and cleaning your monitor. On a white screen on computer monitor, any dead pixel appears as a black dot and any stuck pixel appears as a colored dot, making faults easy to spot.
Does this work as a white screen on PC and Mac?▼
Yes. This white screen website works on all platforms — PC, Mac, Linux, Chromebook, iPhone, and Android. No app or software needed. Just open the page in Chrome, Firefox, Edge, or Safari and press F11 or click the fullscreen button.