LightScreen is a free browser tool that fills a monitor, laptop, or phone with any color at adjustable brightness. Use it as a screen flashlight, reading light, ambient light, or red light for stargazing. Extra modes include breathing, RGB cycle, traffic-light blink, a ring light, and Zoom lighting. A screen test page shows solid colors for dead pixels and backlight bleed. Also includes small fullscreen utilities (clock, terminal simulator, QR on screen). Free, no install, no account.
Overview
The website is https://www.lightscreen.online. The tagline is: Free fullscreen light screen. No download. Pricing is Free. Open the page, pick a color, set the brightness, and the browser fills the display. Nothing is installed and no account is required.
A fullscreen light is the whole idea. The page becomes one color instead of a document. Brightness is adjustable, so the same screen can be a dim reading light or a stronger flashlight. The color is not limited to white: it can be a warm reading tone, a soft ambient color, or red.
Uses
Three everyday uses share color plus brightness.
- Screen flashlight: a bright solid color on a laptop or phone, with no separate app to install.
- Reading light: a lower brightness and a comfortable color, left beside a book or a desk.
- Ambient light: a monitor or laptop washing a room with one color. Any color is available.
Red light for stargazing is that same color control set to red, at a brightness you choose. It is not a different product.
Modes
Besides a steady color, LightScreen includes:
- Breathing: a pulsing fullscreen light.
- RGB cycle: the screen moves through colors.
- Traffic-light blink: a blink pattern.
- Ring light: a ring-light layout for a camera-facing display.
- Zoom lighting: a lighting layout meant for Zoom and similar calls, using the screen as the light.
Each mode stays on the free site. None asks for an install or an account.
Screen test
A screen test page shows solid colors so you can look for dead pixels and backlight bleed. A solid field makes a dark pixel easier to see, and a dark field makes edge glow easier to see. The page does not repair a display. It only shows the colors. It is still free, in the browser, with no download and no account.
Utilities
Small fullscreen utilities sit next to the light:
- Clock: a fullscreen clock.
- Terminal simulator: a fullscreen terminal-style view.
- QR on screen: a QR code on the display so another device can scan it.
They are part of the same free site, not separate paid apps.
Pricing
Pricing is free. There is no install, no account, no download, and no sign-up. Any current browser on a monitor, laptop, or phone can open https://www.lightscreen.online. Close the tab and the light is gone.
Who it is for
Use LightScreen when a display should act as a light: flashlight, reading light, ambient light, red light for stargazing, ring light, or Zoom lighting. Use the screen test for dead pixels and backlight bleed. Use the clock, terminal simulator, or QR on screen for those fullscreen utilities. The category is Productivity.
How to use
- Open https://www.lightscreen.online.
- Choose any color and adjust brightness.
- Fill the monitor, laptop, or phone.
- Switch to breathing, RGB cycle, traffic-light blink, ring light, or Zoom lighting if you want a mode.
- Open the screen test for solid colors.
- Open the clock, terminal simulator, or QR on screen if you want those utilities.
- Close the tab. Nothing was installed.
Contact
Submitted by Feng Zeng. Email: [email protected]. Twitter: @xiaofengzi941 (https://x.com/xiaofengzi941).
