Image Opacity Tool
Upload an image, reduce or restore opacity, preview transparency on a checkerboard, and download a PNG.
Your opacity-adjusted image will appear here
Adjust image transparency locally
Opacity slider
Set the image from lightly transparent to fully opaque with precise percentage control.
Transparent PNG output
Export a PNG that keeps the adjusted alpha channel for overlays and design work.
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
Choisissez une image lisible par le navigateur sur votre appareil.
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2
Set opacity
Move the slider and preview the transparent result.
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3
Télécharger PNG
Save the adjusted image with transparency preserved.
When to change image opacity
Opacity adjustment is useful for overlays, watermarks, soft backgrounds, and layered design assets. Lower opacity makes the image more transparent while preserving its shape and details.
Questions fréquemment posées
Why does this tool only download PNG?
PNG supports alpha transparency. JPG does not preserve transparent pixels.
Does opacity change image dimensions?
No. The output keeps the same dimensions as the source image.
Mon image est-elle téléchargée ?
No. Your image stays in your browser and opacity adjustment runs locally.
Image Opacity Tool last reviewed: Jun 26, 2026.