Use the free Blob Shape Maker below: your data never leaves your browser — all work happens on your device, and nothing is uploaded to any server.
Organic Shapes Beat Boring Boxes
For years, web design meant rectangles: rectangular cards, rectangular buttons, rectangular images. Then designers started using blobs: soft, irregular, organic shapes that look like puddles, clouds, or cells under a microscope. Blobs feel friendly and modern, and they break the grid without breaking the layout. The tool above generates unique blob shapes with smooth curves. You set a seed number, the number of points, and the wobble, and the tool draws a brand new shape every time. No two seeds give the same blob.
A blob is built from points arranged in a circle, each pushed in or out by a random amount, then joined with smooth curves. That is why blobs look natural: they are round-ish, but never perfectly round. The seed controls the random sequence, so the same seed always gives the same shape. That matters when you find a shape you love and want to reproduce it later. Write the seed down, and you can rebuild the exact blob any time.
How to Use the Blob Maker
Start by pressing the random shape button a few times. Each click picks a new seed and draws a new blob. When one catches your eye, stop and fine-tune it. The points control sets how many corners the blob has. Five or six points give a simple, pebble-like shape. Twelve or more points give a complex, wobbly shape that can look like a splash. The wobble control sets how far each point moves from the circle. Low wobble gives a near-circle with gentle dents. High wobble gives a dramatic, star-like blob.
Colour is the next choice. A solid brand colour makes the blob a strong graphic element. A soft pastel makes it a gentle background accent. Many designers place a blob behind a photo or a headline, slightly off-center, so the content sits on top of it. That trick adds depth to a hero section without any image editing. You can also use a blob as a photo mask by placing an image inside it, though that needs a small extra step in your design tool.
Design Tips for Blobs
Blobs work best as accents, not as the whole design. One or two blobs per page is plenty. More than that, and the page starts to feel messy. Pair blobs with clean typography and plenty of white space, so the organic shape stands out against the order around it. Avoid putting text directly on a busy blob edge. If text must sit on the blob, keep the blob colour light and the text dark, or place a solid panel behind the text.
Size matters too. A large blob behind a hero headline anchors the section. A small blob next to a button adds a playful dot of colour. Try rotating or flipping the downloaded SVG in your design tool for even more variety. Since the shape comes from a seed, you can also generate a family of related blobs by using seeds close together, which gives a set of shapes that feel like they belong together.
Frequently Asked Questions
Why does the same seed always give the same blob? The tool uses a seeded random generator. The seed is the starting point of the sequence, so the same seed produces the same point positions every time. That makes your favourite shapes reproducible.
Can I use the blob as a background? Yes. Download the SVG and use it as a background image, or paste the SVG code directly into your page. The transparent background option keeps the page behind it visible.
What if my blob looks too spiky? Lower the wobble and raise the point count. More points with less movement give smoother, rounder shapes. If it still looks sharp, try a new seed, because some random draws are naturally pointier than others.
Generate a blob above, save the seed you like, and add an organic touch to your next design.