Your spare monitor is a $0 key light

Ring lights are harsh and tiny. A monitor is a giant softbox: a wide, even panel of light that wraps around your face, softens shadows, and makes webcam video look intentional. CineGlow turns any screen — second monitor, laptop, tablet, phone — into that light, free, in one click.

How to set it up for video calls

Open this page on your spare screen, pick a temperature (4600–5600K flatters most faces on webcam), go fullscreen, and turn the monitor's hardware brightness to maximum. Position the lit screen just behind or beside your webcam, angled toward your face. On your call in Zoom, Teams, or Meet you'll see the difference immediately — even light, no raccoon shadows.

For recording videos

Use two devices for a classic two-point setup: one screen at 45° as your key light (try Warm portrait), a second dimmer screen on the other side as fill. The Golden hour preset doubles as a background accent light for that streamer glow.

What the color temperature means

Measured in Kelvin, like real film lights: 3200K matches warm tungsten studio lamps, 5600K matches daylight-balanced softboxes. If your face looks orange on camera, slide cooler; if it looks pale blue, slide warmer. Green screen and blue screen presets use standard chroma-key values for background removal in OBS, Zoom, and editing apps.

Lighting guides

Color temperature guide · Look better on webcam · Three-point lighting · 7 webcam lighting mistakes almost everyone makes · Lighting for glasses wearers · Lighting a podcast or interview with screens · Nits, brightness, and why some screens light better

Why a screen works as a light

Photographers judge a light source by two things: how big it is relative to the subject, and how bright. Size determines softness — a large source wraps light around a face and produces gentle shadow edges, while a small one carves hard-edged shadows. That's why studios shoot through umbrellas and softboxes rather than pointing bare bulbs at people. A 24-inch monitor two feet from your face is, in optical terms, a large source: bigger than most portable panels and dramatically bigger than a ring light. Modern displays are also bright enough — typically 300 to 400 nits, some far more — to noticeably lift a face in an ordinary indoor room.

Getting the most out of it

Three settings do most of the work. Turn your display's own hardware brightness to maximum, since software can only work with the light the panel actually emits. Turn off automatic brightness, or the screen will quietly dim itself when it decides the room is dark. And turn off night shift or blue-light filters while using the screen as a light — they shift color temperature in ways that fight your white balance. After that, position matters more than anything: closer is brighter, slightly above eye level is more flattering, and 30 to 45 degrees off to one side looks more natural than dead-on.

What each preset is for

Softbox (5600K) is the everyday choice for video calls and recording — daylight-balanced, clean, flattering on most skin tones. Warm portrait (3200K) matches traditional tungsten studio lighting and suits evening calls or a cozier look. Golden hour (2400K) is an accent: place it behind you aimed at a wall for the warm background glow common in streaming setups. Daylight (6500K) is for matching a strong window. Green and blue screen use standard chroma-key values for background removal in OBS, Zoom, CapCut, or Premiere. Pure white doubles as a lightbox for tracing, a photo-booth backdrop, and a dead-pixel test.

Who ends up using this

Remote workers who want to look awake on morning calls without buying hardware. Streamers and podcasters filling out a three-point setup with devices they already own. People filming short-form video at a desk, in a car at night, or in a dim kitchen. Photographers needing a quick fill light for small product shots. Interviewers sending a link to a remote guest whose home office lighting would otherwise ruin the footage. And anyone who has ever joined a meeting, seen their own preview, and wished they looked less like a hostage video.

Free, private, and nothing to install

CineGlow runs entirely in your browser. There's no account, no download, no watermark, and no limit. Your settings never leave your device because there's no server to send them to. Bookmark it on whichever screen you use as a light, and it's part of your setup permanently.

Does it cost anything?

No. No app, no account, no watermark. Bookmark it for your next call.

Guides

Zoom Call Lighting · Microsoft Teams Lighting · Green Screen Online · Blue Screen Online · Key Light for Streaming · TikTok Video Lighting · Ring Light Alternative · White Screen Light · Warm Light Screen · Photo Fill Light