How to Brighten a Dark Photo (and Fix Low Contrast)
Rescue an underexposed photo: raise the brightness and contrast with sliders, avoid washed-out results, and know when AI enhancement does a better job.
3 min read ·
To brighten a dark photo, open Brightness & Contrast, add the photo, move the Brightness slider up and the Contrast slider a little up as well, click Adjust Image!, and download. Raising contrast alongside brightness stops the picture looking grey and washed out. Both sliders run from −100 to +100, so you can darken and flatten too.
Brighten a photo step by step
- Open Brightness & Contrast and add the photo (or paste a direct link to one).
- Move Brightness up — start around +20 to +40 for a dim indoor photo.
- Move Contrast up slightly — +10 to +20 — to keep blacks black and colours lively.
- Click Adjust Image! to see the result, and fine-tune.
- Download the adjusted photo.
Brightness and contrast, explained
- Brightness lifts (or lowers) every tone in the picture by the same amount: shadows, midtones and highlights all get lighter.
- Contrast stretches the difference between dark and light areas: darks get darker, lights get lighter.
Brightening alone tends to make dark areas grey and flat, because the blacks turn into dark grey. A touch of extra contrast restores depth. For a photo that's too harsh — bright sun, deep shadows — lower the contrast instead.
Common situations
| Photo | Try |
|---|---|
| Dim indoor photo | Brightness +30, Contrast +15 |
| Backlit face (sun behind the person) | Brightness +40; accept a brighter sky |
| Overcast, flat landscape | Contrast +25, Brightness +5 |
| Harsh midday sun | Contrast −15 |
| Scanned document, grey paper | Brightness +20, Contrast +30 |
| Photo of a screen or whiteboard | Contrast +30, Brightness +15 |
These are starting points; every photo is different.
When sliders aren't enough
Very dark photos — taken at night or in a dim room — contain little information in the shadows, and brightening them reveals grain and noise. Better options:
- AI enhancement: the AI Photo Enhancer corrects lighting, colour and noise together, and usually does a much better job on badly underexposed photos.
- Remove grain after brightening with the Image Denoiser.
- Bring colours back: brightened photos can look pale; restore them with the Vibrance Adjuster.
Avoid these mistakes
- Blown-out highlights: pushing brightness too far turns skies, windows and white shirts pure white with no detail — and that can't be undone. Keep an eye on the brightest areas.
- Overdoing contrast: faces get harsh and colours garish. Small amounts go a long way.
- Editing the only copy: always keep the original file.
Give it a mood afterwards
Once the exposure is right, a filter can set the mood — warm for a cosy indoor shot, cool for a winter scene, faded for a nostalgic feel. Apply one from Photo Filters after brightening, not before, so the filter works on well-exposed tones.
Take brighter photos next time
- Tap on the subject before taking the photo — phones set exposure where you tap.
- Drag the exposure slider (the sun icon) that appears after tapping.
- Use night mode in dim light, and hold still.
- Face the light: put windows behind the photographer, not behind the subject.
Frequently asked questions
Is my photo uploaded?
No. The adjustment happens in your browser.
Can I brighten only part of a photo?
This tool adjusts the whole image. For local adjustments — just the face, just the foreground — use the selection tools in the Photo Editor.
Why does my photo look grainy after brightening?
Dark photos contain sensor noise that brightening reveals. Run the Image Denoiser, or use the AI enhancer, which handles both together.