How do I test my screen?

Pick a test above and click Start Test. Each screen test runs full screen in your browser, no download or sign-up needed. Press F11 for full-screen mode, follow the on-screen prompts, and you will have results in seconds on any monitor, laptop, TV, or phone.

How do I test my screen for dead pixels?

Open the dead pixel test and let it cycle through solid red, green, blue, black, and white screens. Any pixel that stays black is dead; one stuck on a single color is a stuck pixel. The whole check takes about 30 seconds.

Does this screen test work on laptops and TVs?

Yes. Every display test on this page runs in a normal web browser, so it works on laptop screens, external monitors, TVs with a browser, tablets, and phones. For TVs without a browser, plug in a laptop over HDMI and run the test full screen.

Is this display test free?

Yes, every screen test here is completely free with no account, download, or watermarks. Run them as often as you like, before buying a monitor, before a return window closes, or when selling a used display.

Screen Test: Check Any Display in 10 Seconds (Free, No Download)

Dead Pixel Test

Check your screen for dead or stuck pixels by cycling through solid colors

Start Test

OLED Burn-in Test

Detect image retention and burn-in on OLED displays

Start Test

Color Accuracy Test

Test color gradients, grayscale, and color reproduction quality

Start Test

Refresh Rate Test

Check your monitor's refresh rate and motion clarity

Start Test

Backlight Bleed Test

Detect light leakage and IPS glow on LCD monitors

Start Test

Ghosting Test

Track moving UFO targets to spot ghosting, motion blur, and overdrive artifacts

Start Test

What to test, and what to replace it with

These tools exist to tell you whether a screen is worth keeping. If it is not, these are the panels worth running the same tests on instead.

LG C4 65 in OLED evo

The panel most of these test patterns are written against. OLED is where the dead-pixel and uniformity tests actually matter.

Check price on Amazon →

Samsung S90F 65 in OLED

The main alternative to the C4 at the same size, and the one worth running the same tests on before you keep it.

Check price on Amazon →

Calibrite Display Pro HL Colorimeter

Test patterns tell you something is wrong. A colorimeter tells you by how much, and fixes it.

Check price on Amazon →

Dell UltraSharp U2722D

The safe QHD desk monitor when a test turns up a panel you do not want to keep.

Check price on Amazon →

As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Prices change, so check before buying.

How to Use Screen Tests

1

Choose Your Test

Select the appropriate test based on what you want to check on your monitor.

2

Enter Full Screen

Click the full screen button or press F11 for the best testing experience.

3

Follow Instructions

Each test will guide you through the process. Use spacebar or click to advance.

4

Check Results

Look for any abnormalities like dead pixels, color issues, or light bleeding.

Screen Test: Check Any Display in Seconds

Dead Pixel Test

OLED Burn-in Test

Color Accuracy Test

Refresh Rate Test

Backlight Bleed Test

Ghosting Test

What to test, and what to replace it with

How to Use Screen Tests

Choose Your Test

Enter Full Screen

Follow Instructions

Check Results

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