Digital Ring Light Help Documentation

A complete guide to the Digital Ring Light, from the eight lights to the timer.

Last Updated: November 15, 2026

1. Getting Started

Open the Digital Ring Light and the light is already on: a white ring on a dark stage. Above the stage are the Light switch and the Full screen button. Below it are three cards: Light type, Colour, and Brightness and timer. Every change shows on the stage at once. Nothing is uploaded and there is no account.

2. The Light Switch

The Light switch, top left, turns the light on and off like a switch on a wall. While the light is off, the stage shows the unlit shape in dark grey so you can still set it up. Your settings are not changed by switching off. The line beside the switch describes the light, for example "Ring light, 6,500 K, 100%".

The light is on at every visit. Whether it was on or off is not remembered.

3. The Eight Lights

• Ring light. A glowing ring with a dark middle, like the ring lights used for video calls and selfies.
• Full screen. The whole stage lit. This gives the most light.
• Bulb. A drawing of a glowing bulb with a wide, soft halo.
• Spotlight. One sharp-edged disc of light in the middle.
• Edge light. A lit frame around the edge with the middle left dark.
• Side lights. Two tall panels, one on each side.
• Tube light. One long bar of light across the stage.
• Candle. A candle with a small flame that flickers gently.

Tap a light to choose it. The line under the buttons says what the chosen light is for.

4. Size

The slider at the bottom of the Light type card changes the size of the chosen light, from 1% to 100%. Its name changes with the light: Ring thickness, Bulb size, Spot size, Edge thickness, Panel width, Tube thickness or Candle size. Full screen has no size, so the slider is hidden for it. The ring always keeps a dark middle, the edge light always leaves the centre free and the two side lights never meet.

5. Colour Temperature

The Colour temperature slider runs from 2,700 K on the left to 6,500 K on the right in steps of 100 K. The track is painted with the colours themselves, golden at one end and white at the other. The number above the slider is the current setting.

6. White Lights and Colour Lights

Six ready-made white lights sit under the slider: Golden night bulb (2,700 K), Warm white (3,000 K), Studio tungsten (3,200 K), Neutral white (4,000 K), Studio daylight (5,600 K) and Cool daylight (6,500 K). The names are everyday ones; makers of bulbs use them a little differently, so go by the number when you want to match a bulb.

Below them are eight colour lights: red, orange, yellow, green, cyan, blue, purple and pink. While a colour light is chosen, the slider is greyed and the number above it shows the colour's name. Moving the slider or tapping a white light brings white back.

7. Brightness

The Brightness slider dims the light from 100% down to 1%, and the five buttons under it jump to 10%, 25%, 50%, 75% and 100%. Red, green and blue are dimmed together in the right proportion, so the colour of the light does not change as it dims. The numbers follow how bright the light looks to the eye: 50% looks about half as bright, which is about a fifth (21%) of the light when measured; 25% is about a twentieth (5%) and 10% about a hundredth (1%).

8. Full Screen

Press Full screen and the light fills the whole screen, without the rest of the page. A small bar at the bottom has the light switch, a minus and a plus button that change the brightness in steps of five, the brightness itself and Exit. The bar and the mouse pointer hide after three seconds; move the mouse, tap the screen or press a key to bring the bar back.

Where the browser allows it, its own bars are hidden as well. On some phones they stay; the light then fills the rest of the screen.

9. The Switch-off Timer

Under Switch off after, choose Stay on, 5, 10, 15 or 30 minutes, 1 hour or 2 hours. If the light is on, the countdown starts at once and the line below shows the time left. If the light is off, the countdown starts when you switch it on. When the time is up the light switches off and a short message says so. The choice stays, so switching the light on again starts a new countdown.

Switching the light off by hand stops the countdown. If your device slept through the end of the countdown, the light goes off as soon as the page is seen again. The timer is not remembered between visits.

10. Keeping the Screen Awake

With Keep the screen awake switched on (it is on to begin with), the page asks your device not to dim or lock the screen while the light is on and the page is in view. It asks only once you have used one of the tool's controls, so simply reading the page changes nothing. The request ends when you switch the light off, when the timer ends, or when you move to another tab or app.

A battery saver mode can refuse the request; the line under the switch then reads "your device did not allow it just now". If your browser does not offer this at all, the switch is replaced by a note: set a longer screen timeout in your device's settings instead.

11. Getting the Most Light

• Turn your device's own brightness all the way up.
• Choose Full screen, 6,500 K and 100%, and open the full screen view.
• Sit close: the light falls off quickly with distance, so an arm's length works far better than across a room.
• Dim the room. A screen is a soft fill light; it cannot compete with a bright ceiling lamp or a sunny window.
• Switch off your device's night light or blue light filter while you use it, or every light will look warmer than its number.
• A bigger screen gives more light. A monitor or a tablet does more than a phone.

12. Keyboard and Accessibility

• Tab moves through the switch, the buttons and the sliders; Space or Enter presses the one in focus.
• Arrow keys move the slider in focus.
• In the full screen view: Up and Down change the brightness in steps of five, Left and Right make a white light warmer or cooler by 100 K, and F or Escape leaves.

The light switch and Keep the screen awake are announced as switches with their state, each slider announces its value, and the stage is described in words to screen readers. No light flashes. With reduced motion turned on in your device's settings, the candle burns steadily and the switches move without sliding.

13. Privacy and Your Data

The light is drawn in your browser; nothing you choose is uploaded. The camera, the microphone and your location are never asked for, and the tool calls no outside service. Your last light type, colour, brightness, size and keep awake choice are kept in this browser on this device, and only once you change a setting. Back to the starting settings removes them. The page, like every page on ZeroDataUpload, shows ads and counts visits; the Privacy Policy explains both.

14. How the Colours Are Worked Out and Checked

A white light's tint is named after the temperature at which a glowing body would have that tint. For each setting the tool works out where that glow sits on the standard colour chart, places it as far from the line of glowing bodies as your screen's own white is, and turns the result into the red, green and blue of a standard screen (the standard called sRGB), with the strongest of the three full on. That is why 6,500 K comes out as the screen's exact white.

Before publishing we compared the tool with a reference made separately: 79,947 cases in 10 groups. The glow's place on the chart was compared with the physical law added up over the standard observer's tables at 281 temperatures. The screen colour of every setting matched the reference to within one step in 255. Measured back, each setting's colour temperature was within 0.4% of its number. Every setting was checked at every brightness (the colour holds and no channel ever falls as the light is turned up), along with the colour lights, the sizes of the eight lights on 76 stage sizes, saved settings made to break the tool, the timer and the candle's flicker. The page was then tested in a browser on phones and computers in both themes.

15. Troubleshooting and Support

• The light is not bright enough. Turn up your device's own brightness, choose Full screen at 6,500 K and 100%, and sit closer.
• Every colour looks too warm. A night light, blue light filter or automatic colour setting on your device is tinting the screen. Switch it off while you use the light.
• The screen still dims or locks. Check that Keep the screen awake is on and that battery saver is off. The request works only while the page is in view.
• Full screen still shows the browser's bars. Some phones do not let a page hide them. The light fills everything else.
• The candle does not flicker. Your device is set to reduce motion, so the flame is kept steady.
• My settings are gone. They are kept per browser and device; a private window or cleared site data starts afresh.

For questions the FAQ does not answer, use the contact form.