BlackScreen is a free browser tool that fills the display with a chosen color for presentations, OLED care, and screen checks.
Core capabilities
A blank screen during a presentation
Open the page, pick a color, and press Space to fill the display. Esc leaves fullscreen. The site lists 11 preset colors plus a custom color, and the same control can download that color as an image from 480p through 8K, or at a size you type in. The result is a blank field for a projector, a meeting, or a photography light, not a slide deck.
Screen checks
The Screen Tester page adds 12 patterns: solid colors, a 50% gray uniformity field, 256-step gradients, sharpness, viewing angle, gamma, response time, a color demo, a grid, and a checkerboard. You supply the display and cycle the patterns. The page says this runs in the browser on smart TVs, desktops, laptops, phones, and tablets. It does not install a native app.
Focus, clocks, and custom backgrounds
An eye-rest timer starts when the page is fullscreen and stops when you leave it. Separate pages offer clock themes, image or color themes you compose, and short browser games. Those are extra display modes on the same site.
How to use it
- Open BlackScreen in a browser. No account is required.
- Choose a color or a test pattern, then press Space for fullscreen. Press Esc to exit.
- If you need a file instead of a live display, pick a resolution from 480p to 8K, or enter a width and height, and download the image.
After the first load, the site says the page keeps working offline.
Who it suits
It fits someone who needs a blank or colored display right now: a presenter, a person checking a monitor for dead pixels or backlight bleed, or a photographer using the screen as a light. It is a weak fit if you need software that builds slides, notes, or a timed talk. Blanking the screen during a talk is a main use, and the page itself does not create a presentation.
Pricing, access and limits
The homepage says the tool is free, with no subscription and no account. A donation link is separate from use. The only platform confirmed is the website, including a phone or TV browser. The privacy page says theme choices, custom colors, timer records, and achievement status stay in local storage, and that essential cookies remember basic settings. The about page says the project started in 2024.
Frequently asked questions
Is BlackScreen free?
Yes. The site says there is no subscription and no account. A donation link does not unlock a paid tier.
How do I enter and leave fullscreen?
Press Space to fill the screen and Esc to leave. The tester page uses the same keys.
Can I save the color as a file?
Yes. Download resolutions run from 480p to 8K, and a custom width and height are available.
Does it work on a phone or TV?
The tester page says the browser page works on smart TVs, desktops, laptops, phones, and tablets. That is still the website, not an installed app.
Does it keep working without a network?
The site says that after the first visit, the page works offline.
