Photography bounce
Hold a phone or tablet near a subject and it becomes a pocket fill light with a controllable colour temperature.
White screen
A fullscreen white screen you can actually calibrate.
Pure white at full brightness, plus warm and cool tones and a dimmer, so you can match the light to the room instead of living with whatever the panel gives you.
#ffffff
6500K
Tap anywhere to go fullscreen · Esc to exit
Tone
Warm tones reduce blue light; cool tones match daylight and photography standards.
Max output is only as bright as your display allows — turn device brightness to full for the strongest light.
How to use it
Three steps, no learning curve.
- 01
Open it fullscreen
Tap the panel or press F. The stage becomes a full-brightness white light source in one gesture.
- 02
Match your light
Warm 3200K is easier on tired eyes, neutral 5600K matches daylight, cool 6500K is best for photos and product shots.
- 03
Dial the brightness
If full white is too harsh, reduce brightness instead of squinting — you keep a clean, even field with no banding.
Good to know
White is the hardest thing a display does.
Every pixel at full brightness means maximum current, maximum heat and maximum wear. That makes a white screen the best light box you already own — and the one you should treat with a little care on OLED panels.
Tracing and reference
Place paper over a tablet and the screen becomes a backlit tracing table with no extra hardware.
Panel checks
A flat white field is the quickest way to spot dust, dead pixels, tint shifts and uneven backlighting.
FAQ
Common questions
What is a white screen actually used for?
Bounce light for photography, a tracing surface for drawing, projector alignment, checking for dust on a lens, testing backlight uniformity, reading in a dark room, and lighting a face before a video call.
Why offer a warm and cool white?
Pure #ffffff is often too blue for indoor use, especially at night. Warm white shifts the tone toward an incandescent light for comfortable reading, while cool white suits photography and calibration checks.
Is this safe for my display?
A static full-white image is the worst case for OLED wear, so do not leave it on for hours on an OLED panel. For those displays, use the black screen instead, or our burn-in and uniformity tests.
Does it use a lot of battery?
Yes — full white at full brightness is the most power-hungry thing you can show on any display. That is the trade-off for maximum light output.