Brightness & Contrast
Adjust brightness and contrast.
Adjust brightness and contrast.
How to use Brightness & Contrast
- Upload the photo you want to adjust
- Drag the brightness slider to lighten or darken it
- Drag the contrast slider to strengthen or soften tones
- Watch the live preview, then save the result
About Brightness & Contrast
Brightness & Contrast lets you adjust how light or dark a photo looks and how far its tones stand apart, using just two sliders. Drag brightness up to rescue an image that came out too dark, or pull it back down when a shot is blown out and washed out. Drag contrast up to deepen the shadows and brighten the highlights, or down to soften a picture that looks too harsh. A live preview updates the moment you move either slider, so you can dial in the exact look before you keep it.
It works the same whether you call it a photo or an image: open a common file such as a JPG or PNG, make your adjustment, and download the result to your device. If you push a slider too far, nothing is baked in until you save — slide it back, or reload the original and start again. There are no watermarks stamped on what you download and no limit on how many images you edit.
The whole thing is free, with no account and no sign-up. It runs entirely in your browser on a canvas, which means your photo is processed on your own device and is never uploaded to a server or stored anywhere. Nothing to install, nothing sent off — just open a picture, move two sliders, and save.
Frequently asked questions
- How do I adjust the brightness and contrast of a photo online?
- Open a photo, then move the brightness slider to make it lighter or darker and the contrast slider to push the tones further apart or bring them closer together. Watch the live preview until it looks right, then download the result. Everything happens in the page — there's no software to install.
- Is the Brightness & Contrast tool free?
- Yes, it is completely free with no account, no sign-up, and no usage limits. You can adjust as many images as you like, and there are no watermarks on what you save.
- Is my photo uploaded to a server?
- No. The adjustment happens entirely in your browser on a canvas, so the image stays on your own device. Nothing is uploaded, stored, or sent anywhere.
- What image formats can I load and save?
- You can open common image files such as JPG and PNG. After you set the sliders where you want them, download the adjusted version straight to your device.
- What is the difference between brightness and contrast?
- Brightness raises or lowers the overall lightness of every pixel at once. Contrast changes how far the light and dark areas are pushed apart, so higher contrast makes shadows deeper and highlights brighter.
- How do I fix a photo that came out too dark?
- Drag the brightness slider up to lift the whole image, then nudge contrast to taste so the shadows don't turn flat and grey. The live preview shows the effect as you go, so you can stop as soon as the detail comes back.
- Can I reduce brightness on a photo that's too bright or washed out?
- Yes. Pull the brightness slider down to bring back an overexposed or washed-out shot, and add a little contrast if the image looks hazy. You'll see the change immediately in the preview before you save.
- How do I make a photo look sharper or more punchy?
- Increase the contrast slider to deepen the darks and lighten the lights, which makes an image read as crisper and more punchy. Pair it with a small brightness change if the whole picture then looks a touch too dark or light.
- Does it work for images as well as photos?
- Yes — a photo and an image are treated the same way. Any common raster image you open, like a screenshot or a scanned picture, can have its brightness and contrast adjusted with the two sliders.
- Can I undo an adjustment if I go too far?
- Yes. The sliders are non-destructive to your original file, so you can move them back at any time before saving. If you've already downloaded a version, just load the original again and start over.