Image Brightness Tool
Upload a dark or overexposed image, move the brightness slider, preview the correction, and download the edited image.
Your brightness-adjusted image will appear here
Fix image exposure locally
Darker or lighter output
Move from shadow recovery to subtle darkening with a single slider.
PNG or JPG download
Keep transparency with PNG or save a smaller JPG for everyday sharing.
Traitement local privé
Votre image reste dans votre navigateur. ImageConver ne télécharge pas le fichier source.
Comment ça marche
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1
Télécharger une image
Choose a browser-readable photo, screenshot, or design.
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2
Set brightness
Use negative values to darken or positive values to brighten.
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3
Télécharger
Review the preview and save the adjusted image.
When to adjust image brightness
Brightness changes every pixel by a consistent amount. It is useful for photos that are slightly too dark, screenshots with low visibility, and product images that need a cleaner white background.
Use small adjustments first. Very high brightness can wash out highlight detail, while strong darkening can hide shadows.
Questions fréquemment posées
Does brightness change image size?
Non. La sortie conserve les mêmes dimensions que l’image source traitée.
Can I download as JPG?
Yes. Choose PNG or JPG before downloading the adjusted image.
Mon image est-elle téléchargée ?
No. Your image stays in your browser and brightness adjustment runs locally.
Image Brightness Tool last reviewed: Jun 24, 2026.