Rounded corners

Apply rounded corners with specified radius

Rounds the corners of images with a radius of X pixels. If you wish to fill the cut corner(s) with a specific color, you can use the bg_color parameter.

radius=X (all corners are rounded with radius X pixels)

radius=R1,R2,R3,R4 (values for each corner, with max being the min px of the 2 sides around corner)

If four values are provided, these values correspond to the four corners: R1 = top-left corner, R2 = bottom-left corner, R3 = bottom-right corner, R4 =top-right corner. For example, to round only one of the corners with the maximum possible radius, you need to use radius=max,0,0,0.