Round the Corners of an Image

No. The rounding happens entirely in your browser with the Canvas API, so the image never leaves your device. That makes it safe for private screenshots, product shots or personal photos.

Rounded corners need transparency so the area outside the curve shows through. PNG and WebP support an alpha channel; JPEG does not, so it would fill the corners with a solid color instead. Those are the two formats this tool offers for exactly that reason.

The radius is clamped to half of the shorter side, so it can never exceed a full pill or circle. If you type or drag past that limit, the tool caps it and the preview simply stops curving further.

Percent is measured against that maximum radius, so 100 percent equals half the shorter side, a fully rounded shape, and 50 percent is halfway there. Pixels give you an exact, resolution-specific value instead.

Yes. Set the radius to 100 percent, or hit the Max preset, and a square image becomes a circle. On a non-square image the same setting produces a pill with fully rounded ends.

No. The output keeps the original width and height, and only the corner pixels are clipped to transparent. Everything inside the rounded area is untouched.

You can load PNG, JPEG, WebP, GIF or BMP. Animated GIFs are read as a single still frame, so the download is a static rounded image rather than an animation.

No pixels inside the rounded area are changed; only the corners are clipped away. Exporting to PNG is lossless, while WebP uses the browser's default encoder for a smaller file.

The tool keeps your original name and appends -rounded before the extension, swapping the extension to match the chosen format, for example photo.jpg becomes photo-rounded.png.