What is a white screen online tool?

The Online White Screen is a browser-based tool that allows you to find dead pixels on your monitor without installing any software. It displays a pure white screen (#FFFFFF), making it easier to identify dead or defective pixels.
The white screen can also be used for other purposes, such as cleaning your screen, providing additional lighting for video calls, reading, and other similar tasks.

How do I use a white screen to test for dead pixels?

To test for dead pixels using ScreenDock’s online white screen, first open the screen in white mode and switch to full-screen. Then, slowly scan your display from one corner to the other. If you notice small dark or black spots that remain unlit against the bright white background, they may indicate dead pixels.
For a more thorough test, follow the white screen test with a black screen to help identify stuck pixels, which are often easier to spot against dark backgrounds.

What’s the difference between a dead pixel and a stuck pixel?

A dead pixel remains completely dark regardless of the color displayed, especially on a white screen, because its transistor has failed and it no longer receives any electrical signal. In contrast, a stuck pixel is typically locked on a single color—usually red, green, or blue—and is much easier to spot against a black background than a white one.
Dead pixels are generally permanent, whereas stuck pixels may sometimes be fixed by gently applying pressure or using software that rapidly cycles through different colors.

Is the white screen online tool free to use?

Yes, ScreenDock’s online white screen tool is completely free to use. You can access all of its features directly through a web browser without signing up, subscribing, or installing any software.
You can also use the tool for a variety of purposes, including screen testing, screen cleaning, providing additional lighting, and other practical uses.

Can I use a white screen tool as a light source for Zoom or video calls?

Yes, the white screen tool provides bright, even lighting, making it an effective fill light for Zoom calls, video conferences, and webcam recordings. By positioning your device’s screen at eye level directly in front of you and setting it to a high brightness level, it can function like a small softbox, helping to reduce harsh shadows on your face.

Does a white screen help clean my monitor or phone screen?

Yes, displaying a completely white screen makes dust, smudges, fingerprints, and streaks on your monitor or mobile device much easier to see, as they stand out against the bright, uniform background. This makes it much easier to identify exactly where the screen needs to be cleaned compared to inspecting a screen that is turned off.

Does the white screen tool work on phones, tablets, and TVs?

Yes, the online white screen tool works on virtually any device with a web browser, including smartphones (iOS and Android), tablets, laptops, desktop monitors, and smart TVs. No special app or software installation is required. Simply open the tool directly in your browser, and the white screen can be rendered in full-screen mode for a more convenient viewing experience.