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Full White Screen

Display a pure white screen in the browser for quick monitor and brightness checks.

Pure WhiteFull ScreenNo SignupBrowser Based

Last updated: May 29, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

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What is Full White Screen?

Full White Screen shows a solid #FFFFFF surface that can be expanded to browser full screen. It helps with brightness checks, dust inspection, basic dead-pixel scans, and using a monitor as a temporary white light source without installing an app.

How to Use Full White Screen

1

Open the tool page.

2

Click Full Screen to expand the white panel.

3

Press Esc to exit full screen.

4

Copy the HEX or CSS value when you need the exact white color.

Common Use Cases

  • Checking a display for dust, smudges, or pressure marks.
  • Looking for dead pixels against a bright white background.
  • Using a monitor as a temporary white light source.
  • Checking brightness uniformity across the panel.
  • Copying the exact CSS value for pure white.

Example Input and Output

Pure white color value.

Color
#ffffff
CSS
background-color: #ffffff;

How This Tool Works

The page renders a solid-color element with background-color #FFFFFF and uses the browser Fullscreen API when requested.

Technical Stack

CSS background colorFullscreen APISVG export

Privacy Note

This tool runs in your browser and does not upload data.

Frequently Asked Questions

Is this true white?
Yes. The screen uses #FFFFFF, which is rgb(255, 255, 255).
Can I use it to clean a screen?
It can make dust and smudges easier to see, but turn off and safely clean the device according to the manufacturer guidance.
How do I leave full screen?
Press Esc or use the browser full screen control.
Does it work on mobile?
Yes, although mobile browser full screen support varies by device and browser.

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