How to Round Image Corners Online

Subtle 8-16px rounding suits website cards. App-icon style needs roughly 20-25% of the image width. A radius of half the width turns a square into a circle.

The output is PNG with transparent corners, so it sits cleanly on any background color.

Profile pictures, product cards, presentation screenshots, and chat stickers all look more polished with rounded corners.

For screenshots, combine rounding with a thin border so the image stays defined on white pages.