# Image Round Corners

Round the corners of an image with a radius in pixels and keep the cut areas transparent. The tool draws a smooth anti-aliased rounded rectangle mask over your picture, so the corners blend cleanly into any background. Use it for app icons, avatars, product cards, slides and social media graphics that need a soft modern edge. The result downloads as a PNG with transparency.

## Frequently asked questions

### How do I round the corners of an image?

Upload your image and enter a corner radius in pixels, from 1 to 2000, with 40 as the default. The tool cuts each corner along a quarter circle of that radius and makes the area outside it transparent.

### What radius should I use?

A radius of about 5 to 10 percent of the shorter side gives the soft look of app cards and buttons. For a 1000 pixel wide image, 50 to 100 pixels works well. Larger values make the shape more pill-like.

### What happens if the radius is larger than the image?

The radius is capped at half of the shorter side. On a square image that cap produces a circle, and on a rectangle it produces a pill shape with fully rounded ends.

### Why is the output a PNG?

The rounded corners need transparency, which JPEG cannot store. PNG keeps the alpha channel so the corners show whatever background sits behind the image on your page or slide.

### Are the rounded edges smooth?

Yes. The mask is anti-aliased, so pixels on the curve are partly transparent instead of jagged. This keeps the corners clean on light and dark backgrounds alike.

### Does the tool keep existing transparency?

Yes. Transparent areas inside your image stay transparent, and the corner mask is applied on top. A logo with a transparent background keeps it, with the corners cut as well.

### Can I add a background color to the corners?

Round the corners first, then use the Image Flatten tool to fill the transparent corners with a solid color. That is useful when the image has to be a JPEG.

### Which file formats can I upload?

You can upload JPEG, PNG, GIF, WebP, TIFF and AVIF images up to 5 MB. Animated GIF and WebP files are processed using their first frame.

### Does rounding change the image size?

No. The width and height stay the same and only the corner pixels become transparent. Images larger than 4000 pixels on a side are scaled to fit 4000 pixels before processing.

### How do I make a circular avatar?

Use the Image Circle Crop tool, which first crops the largest centered square and then applies a circular mask. Rounding a non-square image with the largest radius gives a pill shape instead of a circle.

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