Pure patterns
Solid colours use exact RGB values with no image compression, opacity or decorative layers.
INDEPENDENT DISPLAY DIAGNOSTICS
See what your screen is really showing.
Precise, fullscreen patterns for checking pixels, gradients, uniformity and motion—directly in your browser. No downloads. No sign-up. No interference.
Or choose an individual test ↓- Exact browser values
- No ads during tests
- Runs locally
THE TEST BENCH
One display. Eleven ways to look closer.
Start with the symptom you notice, or work through the complete set. Each test includes a clear method, interpretation and honest limitations.
01Pixel inspection
Black screen
Pure #000000 with no overlays, compression or glow.
View test ↗02Pixel inspection
Dead pixel test
Cycle exact solid colours to find faulty subpixels.
View test ↗03Tone & colour
Grayscale
Inspect neutral tones, shadow detail and highlights.
View test ↗04Tone & colour
Color banding
Reveal posterisation in smooth light and dark gradients.
View test ↗05Tone & colour
Colour test
Inspect solid primaries and progressive saturation.
View test ↗06Panel health
Screen uniformity
Spot dirty-screen effect, tinting and uneven light.
View test ↗07Panel health
OLED burn-in
Look for persistent image retention without repair claims.
View test ↗08Panel health
Backlight bleed
Observe LCD edge leakage and glow in a dark room.
View test ↗09Tone & colour
Contrast detail
Separate levels close to black and close to white.
View test ↗10Clarity & geometry
Sharpness & geometry
Check scaling, overscan, lines and one-pixel detail.
View test ↗11Motion
Motion response
Observe blur, ghosting and browser frame timing.
View test ↗DESIGNED FOR THE MOMENT OF DOUBT
A useful answer, not just a coloured rectangle.
ScreenProbe pairs exact browser-generated patterns with practical guidance. It helps you distinguish a likely panel issue from viewing angle, source processing or a setting—without pretending a browser replaces measurement hardware.
Quiet fullscreen
Navigation, ads and branding disappear so you can inspect the panel without visual contamination.
Honest guidance
Every test explains what it can reveal, what can mislead you and when to verify elsewhere.
ONE TOOLKIT / MOST DISPLAYS
From pocket OLED to living-room Mini-LED.
Use ScreenProbe on monitors, televisions, laptops, phones and tablets. The right interpretation changes by panel type, so our instructions do too.
- OLED
- LCD / IPS
- VA
- Mini-LED
- TV
- Mobile
FAQ / 01—04
Good questions before you start.
01Can a website accurately test a display?
It can send controlled pixel values and reveal visible issues. It cannot measure colour accuracy, luminance or response time like dedicated hardware.
02Do I need to install anything?
No. The tests run directly in a modern browser and do not upload screen data.
03Should I use fullscreen?
Yes. Fullscreen removes surrounding references and browser chrome. Keep browser zoom at 100% for geometry and sharpness patterns.
04Can these tests repair pixels or burn-in?
No. They help you observe and compare. ScreenProbe does not make repair claims.