Round an image's corners (transparent PNG)
Rounding corners trims an image's four corners into arcs and makes the area outside them transparent — common for avatars, app icons and card art. image cat rounds corners by an adjustable radius in your browser and exports a transparent PNG, with a checkerboard preview of the transparent area — all local, files never uploaded.
Drag & drop or click to select filesSelect 1 image
How to round image corners
- 1Drop an image.
- 2Drag the “Corner radius” slider; the checkerboard shows the transparent corners.
- 3Push the radius to 100% to get a circle (for square images).
- 4Click “Round corners & download PNG”.
Why use image cat's Round Image Corners?
- Transparent PNG output: corners are truly transparent over any background.
- Adjustable radius: from a subtle round to a full circle in one slider.
- Local and private: images stay on your device and are never uploaded.
Frequently asked questions
Rounded corners need transparency, which only PNG (or WebP) supports. JPG has no alpha channel, so corners would fill with white — this tool always outputs PNG.
Yes. Push the radius to 100% and a square image becomes a full circle — exactly what you want for a round avatar.
No. The clipping runs locally in your browser via Canvas; nothing is uploaded.
Updated · image cat team