How bright is the screen flashlight?

The screen light fills your entire display at maximum brightness. For even more light on mobile, enable the camera LED torch which activates your phone's physical flash LED.

Does the camera LED work on my phone?

The camera LED torch works on Chrome for Android on most devices. It does NOT work on iPhone/iPad (Safari does not support the torch API) or Firefox for Android (no torch API support). If your LED doesn't turn on, the tool tells you why — try opening the page in Chrome instead. You can still use the screen light in any browser.

Can I set a timer so the light turns off automatically?

Yes. Enter any duration in minutes and seconds (from a few seconds up to many hours) or tap a quick preset (30s, 1m, 5m, 15m, 30m, 1h). The light turns off automatically when the timer runs out. Your last-used color, brightness and timer are saved so they are ready to go next time.

Will my screen stay on while using this?

Yes, the tool uses the Screen Wake Lock API to prevent your device from dimming or sleeping while the light is active.

Does it drain my battery?

A bright screen does use more battery than normal. For extended use, keep your device plugged in.

Can I use this offline?

Yes. Once the page has loaded, it works without an internet connection.

Which color is best for preserving night vision?

Red light preserves your eyes' dark-adapted state much better than white or warm light — useful for stargazing, reading a map at night, or walking around without ruining your night vision. Tap the Astronomy (red) reading preset for a one-click setup — it sets red at 15% brightness, the sweet spot for keeping your rod cells adapted.

Can I read at night without it being too bright?

Yes. The brightness slider goes down to 3% so you can use it as a dim reading light in pitch dark without blinding yourself. The Book (warm) reading preset sets a comfortable amber glow at 8% — easy on the eyes for extended reading.

Can I see the time while the light is on?

Yes. Tick the Clock checkbox and the current time appears in large faded digits in the middle of the screen while the light is on. Useful if you're reading in bed and don't want to dismiss the light just to check the clock.

Does the light fade out gently at the end of a timer?

Yes. In the last 30 seconds of a timer, the light gradually dims to off so you're not suddenly plunged into darkness. Helpful as a sleep light.

Is there a mobile app?

A native Android app is in the works — it will give you a one-tap torch without opening the browser and will keep working offline. The web version works on any device right now.

What does Candle mode do?

Candle mode fills the screen with a warm 1800 K glow and simulates the natural 5 Hz flicker of a real flame (scientifically measured — see Nature 2018 study on candle flame oscillation). It is calibrated to be perceptible without being distracting, ideal as a cozy nightlight or reading backlight. The flicker pauses at very low brightness so it is not annoying in bed.

What are Sunset, Aurora and Dawn modes?

They are ambient-gradient modes. Sunset uses long-wavelength oranges and reds that do not suppress melatonin, making it friendly for late-evening use. Aurora cycles through tranquil teal and violet. Dawn fades from deep purple to peach — useful as a slow sunrise wake-up backdrop. You can also pick any two colors yourself with the Custom gradient.

Can I use my own image as a background?

Yes. Switch to Image mode and choose an image from your device. It stays entirely on your phone or computer — it is never uploaded to any server. Great for turning your screen into a soft nightscape, a star chart for kids, or a personal mood-light photo.

Lanterna Online Grátis

Transforme sua tela em uma luz brilhante. Ative o LED da câmera em celulares.

Nenhum dado sai do seu dispositivo

Aperte o botão ou pressione Espaço para ligar

Brilho 100%

Cor

Timer min s

Ajustes rápidos

Leitura

Modo

Relógio Exibir a hora na tela enquanto a luz está ligada

Como funciona

Aperte o botão de energia : toda a sua tela se transforma em uma fonte de luz brilhante e uniforme.
Ajuste o brilho : arraste o controle de brilho até o nível que lhe convém.
Escolha uma cor : branco para brilho máximo, quente/âmbar para uma luz de leitura confortável, ou vermelho para preservar a visão noturna.
Entre em tela cheia : remova a interface do navegador para maximizar a área de luz. Sua tela permanece acesa automaticamente.
Defina um timer : escolha uma duração para que a luz se desligue automaticamente — útil para uso mãos-livres.
LED da câmera (celular) : em dispositivos compatíveis, ative o LED do flash traseiro para um feixe muito mais brilhante e focado.

Quando usar

Queda de energia : luz instantânea de qualquer dispositivo, sem baixar aplicativo.
Achar objetos no escuro : chaves, fechaduras, objetos caídos.
Leitura noturna : use o âmbar quente ou o branco atenuado como uma luz de leitura suave.
Camping ou ar livre : luz rápida quando seu app de lanterna não está instalado.
Visão noturna : a luz vermelha preserva a adaptação dos seus olhos à escuridão.

Luz de tela vs LED da câmera

Sua tela produz uma luz difusa em ampla área — perfeita para iluminar um cômodo ou para ler. O LED da câmera produz um feixe focado, muito mais brilhante, como uma lanterna tradicional.

Compatibilidade com o LED da câmera : Chrome no Android (a maioria dos dispositivos). Não funciona em iPhone/iPad (o Safari não tem API torch), Firefox para Android (sem API torch) nem em navegadores de desktop. A ferramenta detecta o suporte automaticamente e indica por que seu dispositivo não consegue usá-lo. Abra a página no Chrome para a melhor experiência. A luz de tela funciona em todos os navegadores.

Ferramentas relacionadas

Tela branca e teste de monitor Cronômetro on-line gratuito Conversor de cores Régua de pixels gratuita