ScreenCheckup
YOUR DISPLAY, UNDER A CLOSER LOOK

Screen test. A closer look.

One monitor test. A few solid colors. A clearer picture of what you’re seeing.

↗ No installation◉ Visual inspection⌂ Stays on your device
All-around checkMANUAL CHECK
01 / 06
WhiteRGB 255, 255, 255
YOUR TEST PATTERN

Start with white.

Select a color, then give it the whole screen.

← → Switch colorsEsc ExitF Fullscreen

Tap the pattern to show controls. No automatic cycling or flashing.

◎ You inspect the physical screen. Nothing is scanned or uploaded.Go at your own pace ↗
YOUR EYES. YOUR NOTES.

Keep a little record.

Save what you noticed, so you can compare later. One record per test, stored only in this browser.

⌂ Local to this device

No automatic result. Choose only what you actually observed.

A MORE FOCUSED LOOK

Something specific on your mind?

Choose a check for what you’re seeing.

Browse all screen tools →
TAKE A MINUTE. TAKE A CLOSER LOOK.

How to run a screen and monitor check

You do the observing.
We provide the patterns.

  1. 01

    Gently clean the screen. Use your usual brightness, disable night color filters, and avoid reflections.

  2. 02

    Start the test. Look across the whole panel, including its corners, without pressing on it.

  3. 03

    Move through every color. Check whether an unusual mark stays in the same physical position.

  4. 04

    Record what you saw. Repeat under normal viewing conditions before drawing a conclusion.

BEFORE YOU DRAW A CONCLUSION

Your screen check questions

What can an online screen tester check?

It supplies consistent backgrounds for your own visual inspection. You can look for fixed points, lingering shapes, and uneven areas, then compare them across patterns. It cannot scan the physical display or generate a hardware health score.

Can I use this as a screen test image?

The page draws solid digital fields in your browser, so you do not need a separate download. Browser color settings and scaling still affect what you see.

Can this screen defect test diagnose a damaged panel?

No. It gives you patterns to look at for visible differences; it cannot identify the cause, confirm a physical defect, or determine warranty coverage.

Can I run this screen test on an iPhone, Android phone, laptop, or TV?

The patterns run in modern browsers with JavaScript enabled. Fullscreen support varies by browser and device; if it is unavailable, the tool uses the browser viewport and explains that browser controls may remain.

Do I need maximum brightness?

Use your usual comfortable brightness first and avoid reflections. A mark seen only under unusual settings needs a normal-use recheck. This website cannot set or measure your physical brightness.

MAKE SENSE OF WHAT YOU SEE

Put your observation in context.

Compare the clues, then return to the tool to repeat your check.

Understand dead vs. stuck pixels →IPS glow vs. backlight bleed →Image retention vs. burn-in →Open the white field →Open the black field →Laptop check guide →TV check guide →Browse all screen check guides →

Instructions source-checked · Dell display pixel guidance. Manufacturer guidance explains the concepts; it does not certify this tool or your panel.

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