The Full Screen Light effect fills your entire screen, edge to edge, with a single flat color. There's no ring, no gradient, no animation — just the screen itself acting as one solid light panel, as bright and as warm or cool as you set it.
Before you start
- A screen you can point where the light is needed. A monitor, laptop, tablet, or phone all work — whichever one you position matters more than which device it is.
- Your device's own screen brightness turned up. The effect's Brightness control sets the output within the page, but it can't exceed what your display's hardware brightness allows. Turn that up in your device or OS settings too if the panel still looks dim at Brightness 100.
- A clear desktop. Close or minimize other windows first — anything left open sits on top of the light panel and blocks part of the screen.
Set it up
- Open Full Screen Light on the screen you want to use as your light source.
- Close or minimize anything else open on that screen so nothing overlaps the panel.
- Set Color Temperature to match what you need — Daylight or Cool White for a neutral, bright white; Warm White or Tungsten for a softer glow; Candle for a warm amber cast.
- Set Brightness to 100 for maximum output, or lower it if the light is too intense for the distance you're working at.
- Select Go Fullscreen to remove the browser's address bar and tabs, so the entire screen is the light panel with nothing else on it.
You'll know it worked when the whole screen is a single, edge-to-edge block of color with no browser chrome, window borders, or UI visible.
To leave fullscreen, press Escape or move your mouse and select Exit Fullscreen. In fullscreen, the on-screen buttons fade out after five seconds without mouse movement and reappear as soon as you move it again.
What each control does
| Control | Range | What it changes |
|---|---|---|
| Brightness | 10–100 | Overall output of the panel. The main dial for "too dim" or "too intense." |
| Color Temperature | Daylight → Black | The color and warmth of the panel, from 6500K Daylight down through Warm White, Tungsten, and Candle, to Black (0K), which turns the panel off entirely. |
Common setups
- Room lighting replacement. Daylight or Cool White, Brightness 90–100. Best used as fill or accent light rather than your only light source — aim it at a wall or ceiling to bounce and spread it, since a screen's output is limited by its own size.
- Photography or product backdrop. Neutral or Daylight, Brightness 100. A second screen behind or beside your subject gives a clean, even white background or a soft fill without setting up separate lighting gear.
- Emergency lighting. Daylight, Brightness 100, on a phone or tablet you can carry to where you need to see. Treat it as backup light, not a substitute for a real flashlight.
- Mood lighting. Warm White, Tungsten, or Candle, Brightness 30–50. A dim, warm panel reads as ambient light rather than a work light, useful in a corner or behind furniture.
Troubleshooting
The screen looks dim even with Brightness at 100. The effect's Brightness only controls output within the page — it can't push past your display's own hardware brightness. Raise your device or monitor's screen brightness setting as well.
The screen went solid black. Color Temperature is set to Black, which is 0K — no light, by design, not a fault. Select any other Color Temperature option to get light back.
Colors look tinted or wrong in photos or on camera. Your camera is white-balancing against the room, not against the screen. Match Color Temperature to your room lighting — Tungsten or Warm White under household bulbs, Daylight near a window — and lock your camera's white balance in your video or camera app if it offers the option.
The effect won't go fullscreen. Some browsers block fullscreen until you've interacted with the page first. Click anywhere on the page and select Go Fullscreen again.
The room still isn't bright enough. A screen's light output is limited by its physical size and how close it is to what you're lighting. Move the screen closer to the subject, or use it as a supplement alongside existing room lighting rather than a full replacement.
Next steps
For directional, more sculpted light instead of a flat even panel, try Key Light. For a light shaped and positioned specifically for your face on video calls, try Ring Light.