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.