MB Networks
IMG-11 · Round Corners
Round an image's corners
Round the corners of any image by a pixel radius. The area outside the rounded shape becomes transparent. Nothing leaves your device.
Image
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How rounded corners actually work on an image
This tool doesn't distort the image itself — it clips the four corners using a rounded rectangle mask, making the clipped area transparent. That's why the output needs to be PNG or WebP (formats with an alpha channel); exporting as JPEG has no way to represent the transparent corners and fills them with a solid background color instead.
Choosing a radius
The right corner radius scales with image size — a small radius on a large image reads as barely-there, while the same pixel radius on a small icon can look dramatically rounder. There's no universal correct value; the live preview is the fastest way to find a radius that matches your specific image's proportions.
Why does my rounded image need to be PNG, not JPEG?
Rounding corners works by making the clipped-off corner areas transparent, and JPEG has no alpha channel to represent transparency at all. Export as PNG or WebP to actually get transparent (properly rounded-looking) corners; JPEG will fill them with a solid background color instead.
Will the same corner radius look the same on different-sized images?
No — radius is a fixed pixel value, so the same number looks like a subtle rounding on a large image and a much more dramatic curve on a small one. Adjust the radius per image size rather than reusing one fixed number across differently-sized images.
Does this work on non-square images?
Yes — the rounding is applied independently to all four corners of the image's actual bounding box, whatever its aspect ratio. It doesn't require a square source image.
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