Free SVG Blob Generator — Create Organic Blob Shapes Online

Why Blobs Became a Web Design Trend

Harsh geometric shapes — squares, circles, rigid grids — dominated web design for years. Then designers discovered that organic, asymmetric blob shapes create a sense of warmth, movement, and approachability that flat geometric forms can't achieve.

A well-placed blob shape serves as:

• A background accent that adds visual depth without hard edges
• An image mask that crops photos into flowing, natural-looking frames
• A decorative element that guides the user's eye through the layout
• A CTA button shape that feels more friendly than a rectangle

The trend exploded on landing pages, SaaS marketing sites, portfolio pages, and mobile app design — and it shows no signs of slowing down.

How Blob Shapes Are Generated

A blob appears organic but is mathematically defined. Our generator creates blobs using Bézier curves on a base polygon:

1. Base polygon: Start with a regular polygon (e.g., 8 points equally spaced around a circle).
2. Randomize radii: Each point's distance from the center is varied by a configurable amount (the "complexity" or "randomness" slider).
3. Apply smooth curves: Rather than connecting points with straight lines, cubic Bézier curves are drawn between each point with control handles that ensure smooth, continuous transitions.
4. Close the path: The curve wraps back to the first point seamlessly.

The result is a unique, smooth closed SVG path that looks completely organic but can be reproduced exactly from its numeric parameters.

Customization Options

Complexity: Controls the number of points in the base polygon. Fewer points (4–5) create simple, large blobs. More points (8–12) create more intricate, irregular shapes.

Randomness: How much each point deviates from the base circle. Low randomness = nearly circular. High randomness = wildly irregular, spiky blobs.

Colors: Fill color with gradient support. Apply a solid color, a linear gradient, or a radial gradient to your blob.

Size: Control the output dimensions. For SVG, you usually want viewBox coordinates; for CSS clip-paths, you want percentages.

Seed: Every blob has an underlying random seed. Use the lock icon to keep exploring variants at the same complexity/randomness settings.

Export Formats

SVG code: The raw <svg> element with the path, ready to paste directly into your HTML. SVGs are scalable — they look perfect at any size or resolution.

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