SCREENBLACK

ONLINE DISPLAY TOOL

Black Screen Online

A simple, fullscreen black screen for display testing, OLED checks, screen cleaning, and everyday use.

Open Black Screen ↓

SCREEN TOOL

Pure Black Screen

Choose a color, adjust brightness, enter fullscreen, or set a timer.

Ready
Black Screen Tap or click the screen, or press F, to enter fullscreen. Exit fullscreen: press Esc on desktop, or use your browser's fullscreen exit control on mobile.

Keyboard: F = fullscreen · 1–5 = colors · Esc = exit fullscreen

WHY USE A BLACK SCREEN?

A simple tool for more than a black background.

A pure black screen can make display problems easier to notice and can also be useful when you need a clean, distraction-free display. ScreenBlack puts the common controls in one place without unnecessary clutter.

USE CASES

What can you use it for?

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Display testing

Use solid colors to inspect pixels, brightness consistency and other visible display issues.

Start testing →
OLED

OLED testing

Black is especially useful when checking OLED displays because individual pixels can switch off completely.

Explore OLED testing →
PNG

Pure black images

Need an actual image instead of a webpage? Download pure black PNG and JPG files for any resolution.

See resources →
⌁

Screen cleaning

A dark display can make dust, fingerprints and smudges easier to spot while cleaning.

Open the screen →

SCREENBLACK RESOURCES

Explore the tools we're building

The homepage stays focused on the tool. Deeper pages provide detailed testing information, OLED guidance and downloadable black images.

01

Black Screen Test

Learn how to use solid colors to inspect common display problems.

 02

OLED Black Screen

OLED-specific testing information and a focused black-screen experience.

 03

Black Screen Image

Pure black PNG and image resources for screens and backgrounds.

 04

Resolution & Scaling Check

Read browser-reported viewport and scaling values; inspect visual patterns.

 05

Refresh Rate Estimator

Estimate the browser frame cadence and compare it with your display settings.

QUICK GUIDE

How to use a black screen for display testing

  1. Open the screen tool and choose the color you want to inspect.
  2. Enter fullscreen so browser controls do not distract you.
  3. Set comfortable brightness and inspect the display from a normal viewing distance.
  4. Look for unusual pixels, uneven brightness or visible light around the edges.
Important: A screen test can help you notice visible issues, but it cannot diagnose every display problem.

SCREENBLACK BLOG

Practical guides for display owners

Go beyond a quick test with careful advice on monitor checks, safe screen care and recording a display issue.

BUYING ADVICE

Buying a Used Monitor?

A practical inspection checklist before you pay.

 SCREEN CARE

Clean a Monitor Safely

Use gentle methods and avoid risky cleaning shortcuts.

 TESTING METHOD

Set Up a Repeatable Screen Test

Control the conditions before interpreting a pattern.

Browse all guides →

FAQ

Frequently asked questions

Is this a real black screen?

Yes. The testing area uses a pure black background by default. You can also switch to other solid colors.

Can I use it on a phone?

Yes. The page is responsive and can be used on phones, tablets, laptops, monitors and TVs with a compatible browser.

Can a black screen find dead pixels?

It can help you inspect the display, but a black screen alone cannot identify every type of dead or stuck pixel. Testing multiple solid colors is more useful.

Can I make the screen fullscreen?

Yes. Use the Fullscreen button or press F while the page is active.

Does the timer turn the monitor off?

No. The timer changes the ScreenBlack tool state after the selected period; it does not control your monitor's power.