Curve shapes CSS corners — from a simple rounded rectangle to an organic “blob” by setting each corner's horizontal and vertical radius independently — and copies the border-radius rule. Great for cards, avatars and playful shapes. Nothing is uploaded.

separate horizontal / vertical (blob mode)

All corners 30%

In blob mode each corner uses two radii — a horizontal and a vertical percentage — which is what gives the soft, asymmetric shape. Percentages keep the shape proportional at any size. Everything runs on your device.