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Break out of the box. Visually manipulate the 8-value border-radius property to create organic, fluid blob shapes for your UI.
/* Generated on cssgen.org */Standard UI design relies heavily on perfect circles and rigid rectangles. But as web design evolves, organic, friendly, and fluid shapes—often referred to as "Blobs"—have become incredibly popular for hero images, background accents, and profile pictures.
While a standard border-radius: 10px; is easy to remember, creating an organic blob requires an 8-value syntax separated by a slash. The numbers before the slash define the horizontal axis, and the numbers after define the vertical axis. Because predicting how these 8 percentages will interact is nearly impossible in your head, our visual generator does the heavy lifting for you. Read more on the official MDN Web Docs.
@keyframes to slowly transition between two different 8-value radius strings over 5 to 10 seconds. It creates a beautiful, slow-morphing lava-lamp effect.border-radius to an <img> tag to instantly crop a standard square photo into an organic, friendly shape for team or profile pages.When you use a slash in a border-radius value, you are creating an elliptical (oval) curve rather than a perfect circular one. The four values before the slash dictate the horizontal radius of the corners, and the four values after the slash dictate the vertical radius.
When building blobs, using percentages (e.g., 50%) allows the shape to scale fluidly no matter how wide or tall the element becomes. If you used hard pixel values (like 50px), the shape would distort on mobile devices or larger screens.
It depends on your goal. border-radius is incredibly smooth, easy to animate, and universally supported. However, it can only create curves. If you need to cut out sharp angles, stars, or complex polygons, you should use the clip-path property instead.