Give any image soft, curved corners in seconds. Great for avatars, badges, thumbnails and product shots.
100% Local
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Upload an image to round its corners
How to Use Image Rounder
Upload an image — click the drop box, drag a file in, or paste with Ctrl/⌘+V.
Drag the radius slider — the preview rounds instantly. The value is capped at half the shorter side so corners never overlap.
Choose a background — Transparent removes the corners entirely (PNG), while White or Custom fills them with a color.
Pick the output format — use PNG when you need true transparency behind the rounded corners.
Download the rounded image.
Choosing the right background
Choose Transparent when the image will sit on top of other elements — for example a circular avatar or a blog header where the page background shows through. Choose White or a custom color when the final file will be placed on a known background and you need to match it exactly. Remember that JPG does not support transparency, so pick PNG for the transparent option.
Features
One slider controls the corner radius with live preview.
Transparent, white and custom-color backgrounds.
Radius auto-capped to half the shortest side.
Works with every common image format, including transparent PNGs and GIFs.
Output to PNG (lossless), JPG or WebP.
All processing runs locally in your browser. Your data is not uploaded to any server.