Image Rounded Corners
Round an image's corners and export a transparent PNG.
About this tool
Rounds the corners of an image and exports it as a transparent PNG — drag the slider to control how rounded the corners are, from a subtle rounding to a full "squircle" or stadium shape.
Everything runs locally in your browser using the canvas element — nothing is uploaded anywhere.
Frequently asked questions
- Why is the radius a percentage instead of a fixed pixel size?
- A percentage (of the shorter side) scales sensibly regardless of your image's actual dimensions — 50% always produces a fully rounded (pill/circle-like) corner no matter how large or small the source image is.
- Why does the output need to be PNG?
- The area outside the rounded corners becomes transparent, which JPEG can't represent (it has no alpha channel) — PNG is required to preserve that transparency.
- Is my image uploaded anywhere?
- No — rounding happens entirely on the canvas element in your browser.