SVG Blob Generator

This generator builds organic blob shapes the mathematically honest way: it places 3 to 14 anchor points around a circle, pushes each one in or out by a random amount controlled by the Contrast slider, then runs the points through a Catmull-Rom spline converted to cubic Bézier curves. That last step is what makes the outline flow smoothly through every point instead of looking like a wobbly polygon — the Smoothness slider is literally the spline tension.

The shape is driven by a deterministic seed, so the same seed always reproduces the same blob. That enables two things you will not find in most blob makers: the Share button encodes the seed plus every setting into the URL, so a teammate opening your link sees the identical shape, and dragging a slider reshapes your current blob rather than rolling a completely new one.

Styling and export are all local to your browser. Fill the blob with a two-colour gradient at any angle (or a solid colour), toggle a soft drop shadow, and rotate it freely. Then copy the SVG markup, download it as an SVG or PNG at 256 to 1024 pixels, or copy a ready-made CSS clip-path so you can crop images and divs into the blob shape. Keyboard users can press Space or R to shuffle, C for new colours and P to reveal the anchor points.