Click to enter fullscreen
Check for dead pixels, bright spots and dark spots
White Screen Test
Identify dead pixels, dark spots, stuck pixels, and uneven brightness across a white display background. Open fullscreen on any monitor, phone, tablet, or TV — then download a white wallpaper PNG if you need a reference still.
White Screen Test
Identify dead pixels, dark spots, stuck pixels, and uneven brightness across a white display background. Open fullscreen on any monitor, phone, tablet, or TV — then download a white wallpaper PNG if you need a reference still.
White screen online
Instant full white screen in any browser — no app install. Tap or click the preview for fullscreen on desktop, phone, or tablet.
White screen test
A uniform white background is the standard first step in a dead-pixel and stuck-pixel check — dark defects show clearly against pure white (#FFFFFF).
Monitor cleaning
A bright white surface makes dust, smudges, and fingerprints easy to spot before you wipe the panel.
Blank white screen wallpaper
Download a white screen wallpaper at 1080p, 4K, or custom dimensions as a PNG for presentations, video calls, or a clean desktop background.
About White Screen Test
Run a free fullscreen white screen test to find dead pixels, stuck pixels, dark spots, and uneven brightness on monitors, phones, tablets, and TVs.
Why a white screen helps with display uniformity
A fullscreen white background stresses all RGB subpixels evenly, which makes uneven brightness, backlight bleed, and color tint easier to see.
MacBook screen white tint — what to look for
A MacBook screen white tint often appears as a warm yellow, cool blue, or pink cast across an otherwise white image. Open this tool in fullscreen and compare all four corners to the center.
White dots on iPad screen and white spots on mobile
White dots on an iPad screen or white spots on a mobile screen are usually stuck subpixels that stay lit when the display should be dark — they stand out on black, not on this white test.
How to use the white screen
Identify dead pixels, dark spots, stuck pixels, and uneven brightness across a white display background. Open fullscreen on any monitor, phone, tablet, or TV — then download a white wallpaper PNG if you need a reference still.
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Open this page in any modern browser on desktop,…
Open this page in any modern browser on desktop, MacBook, iPad, or mobile.
Tip Use ← → to switch colors in the picker
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Click Enter fullscreen or tap the preview for a f…
Click Enter fullscreen or tap the preview for a full blank white screen.
Tip Press F or click the preview for fullscreen
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Run a white screen test for stuck pixels, downloa…
Run a white screen test for 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.
White screen tips
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Why a white screen helps with display uniformity
Full HD is 1920×1080 pixels; 4K is 3840×2160. IPS panels may show subtle corner brightness variance — a white screen reveals that quickly.
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MacBook screen white tint — what to look for
If tint is consistent across the panel, it may be a color-profile or True Tone setting. If only one zone looks off, that can indicate backlight or panel uniformity issues worth checking under warranty.
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White dots on iPad screen and white spots on mobile
Use this white screen first to confirm the panel is evenly bright, then switch to our black screen to hunt bright stuck pixels. For a full check, use Start pixel test to cycle white, black, red, green, and blue every 5 seconds.
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 White
Choose a solid color for pixel tests, monitor cleaning, chroma key checks, or ambient lighting.
White screen FAQs
What is a white screen test?
A white screen test fills your display with pure white (#FFFFFF) so you can check for dark dead pixels, backlight bleed, and color tint. TestMyGears runs a free white screen test online in your browser — click the preview for a full white screen instantly.
How do I get a white screen online?
Open this page on any device and click the preview or Enter fullscreen. You get a full white screen online with no download or app — works on desktop, MacBook, iPad, and mobile browsers.
Can I download a white screen wallpaper or photo?
Yes. Pick a resolution (1080p, 4K, 8K) or enter custom dimensions, then click Download PNG to save a white screen wallpaper or white screen photo file to your device.
How do I use a white screen as light?
Enter fullscreen on this page and place your phone or laptop near your face — the bright white screen works as soft fill light for video calls, selfies, and recordings. Lower brightness for comfort.
How do I run a white screen test for dead pixels?
Open fullscreen and look for dark or colored dots on the pure white background. Click Start pixel test to auto-cycle white, black, red, green, and blue every 5 seconds, or compare with our black screen for stuck pixels.
Is this a white screen YouTube video?
No. TestMyGears is an interactive white screen online tool — not a YouTube video. You get an instant full white screen in your browser with download and pixel-test options built in.
Why do I see white dots on my iPad screen?
White dots on an iPad screen during normal use are often stuck pixels that stay on. They are easiest to see on a black screen, not white. Use this white screen test for overall brightness, then test on /black-screen for bright dots.
What causes a MacBook screen white tint?
MacBook screen white tint can come from True Tone, Night Shift, a warm color profile, or uneven panel backlight. Compare this fullscreen white view to a printed white reference; if tint varies by screen zone, note it for a display check.
Does it work on mobile?
Yes. TestMyGears works in mobile browsers on phones and tablets including iPad — tap the preview for a full white screen online.
White Screen Test
Identify dead pixels, dark spots, stuck pixels, and uneven brightness across a white display background. Open fullscreen on any monitor, phone, tablet, or TV — then download a white wallpaper PNG if you need a reference still.
