Screen Tools & Utilities

What these screen tools are for#

Screen tools turn your display into something else for a while: a prompter, a scoreboard, a dark or bright panel, or a harmless prank. Each one runs in your browser and fills the screen with one click.

They suit quick jobs where installing an app would take longer than the job itself. Nothing is uploaded, and settings stay in this browser, so your next visit starts where you left off. They work with a mouse, a keyboard or touch.

Black Screen

A plain black page that fills the screen. Use it to darken the display while music or a podcast plays, to rest an OLED panel, or to look for light leaking at a monitor’s edges in a dark room.

Hacker Typer

Every key you press types made-up code that looks like a movie hacking scene. Press Alt three times for ACCESS GRANTED, or Caps Lock three times for ACCESS DENIED. It’s a harmless prank: nothing is hacked, sent or installed.

Online Teleprompter

Paste a script, set the speed in words per minute and read it in full screen. Mirror mode suits glass rigs, and a presenter clicker can pause it or jump ahead. Your scripts stay in this browser.

Online Scoreboard

Keep score for basketball, volleyball, soccer and other sports, with a game clock, periods and fouls. Put it on a TV or projector in full screen, or open a separate display window, and run it from the keyboard.

How to choose the right screen tool#

Start with what you need the screen to do, then pick the matching screen tool from this table or the cards above.

If two tools seem to fit, think about where people will look. A phone is fine for a quick prompter, but a scoreboard that a room watches belongs on a laptop, TV or projector.

Two monitor checks fit here too. A backlight bleed test shows glow at a screen’s edges in a dark room. A dead pixel test finds pixels that stay dark or stuck.

Recording yourself? Check your framing and light with the webcam test before you start the teleprompter.

Each tool does one job instead of coming in dozens of near-identical versions. Sport presets live inside the scoreboard, for example, so you never hunt for the right page.

Using screen tools in full screen#

Most tools go full screen when you press Start or the full-screen button. To leave, press Esc, or move the mouse or tap the screen to show the ✕ button. On Windows, F11 switches the whole browser to full screen and back.

iPhone Safari can’t show one part of a page in full screen. On an iPhone, the tools fill the browser window instead, so turn the phone sideways for the biggest view.

During long sessions, the tools ask the browser to keep the screen awake, but only while the page is visible. The cursor hides after 2 seconds without movement and comes back when you move the mouse.

To use a TV or projector, connect it with HDMI and choose Duplicate or Extend in your display settings. Move the browser window to the big screen first, then switch the tool to full screen there.

With two screens, put the tool on the one people watch and keep your own window on the other. The scoreboard has a separate display window for exactly this, and it stays in sync with your controls.

Test the setup a few minutes before you need it. Check that the text is big enough from the back of the room, and that the screen doesn’t dim or sleep.

Keep pranks harmless#

The prank screens are plain web pages. They don’t install anything, change settings or send data, and Esc or closing the tab ends them.

Reveal the joke soon, and never run a prank on a work or school computer. Someone may call IT or restart the machine and lose their work. Stay nearby, keep it short and show the person how to exit.

Real scams can look similar, so know the warning sign. A page that asks you to press Win+R, paste a command or call a support number is a scam: close the tab and never follow its steps.