Online Tool Store
· 6 min read
Best 3 SVG Blob Generators Compared
Manesh Jayawardhana
CIO & Co-founder
You need a soft organic shape behind a hero image or under a pricing section. Drawing one by hand in a vector editor takes ten minutes and still looks like a potato.
Blob generators exist because this shape is fiddly to draw and trivial to compute. The good ones give you enough control to match a specific layout rather than spitting out something random and hoping. The differences come down to how you steer the shape, what you can export, and whether the free version marks your work.
How to judge a blob generator
How do you control the shape? Sliders for complexity and randomness are the common approach. Direct control of points or bezier handles is rarer and much more precise when you are matching an existing curve.
What can you export? Copyable SVG markup is the minimum. PNG at a chosen resolution matters for slides; CSS output matters if the blob is a background.
Is the free export clean? Some generators reserve watermark-free or high-resolution export for a paid tier. Worth knowing before you build a design around one.
Is it repeatable? A seed value lets you return to the same shape later. Without one, a good blob you did not save is gone.
The comparison
| Tool | Best for | Free tier | Watch out |
|---|---|---|---|
| GraphMake Blob Maker | Precise control with a repeatable seed | Free, no account, no watermark | Four sliders is a lot to learn for one shape |
| ssshape by fffuel | Drawing a shape around your own points | Free, no account | Point-drawing is slower than a random spin |
| MagicPattern Blob Generator | Gradient and image fills | Free to use | Pro unlocks watermark-free and hi-res exports |
Facts checked August 2026; tools change their plans. Table covers only the 3 alternatives — our tool gets its own section below.
GraphMake Blob Maker
The most controllable. Four sliders drive the shape: lobes from 3 to 12 for the number of rounded protrusions, bumpiness for how wild the radial variation gets, softness for handle length, and a seed to produce different shapes at identical settings. You can also grab bezier handles directly or edit exact coordinates in a nodes panel, which is the escape hatch every other generator lacks.
Export covers SVG, plus PNG and JPG at 256 through 4096 pixels. It states no account, completely free, no watermark, and that the shapes are yours to use commercially without attribution. The seed is the underrated feature — it makes a shape reproducible, which matters the moment a design needs revisiting.
ssshape by fffuel
Comes at it from the other direction: you place a few points and it draws a smooth shape around them. That inverts the usual workflow — instead of generating randomly and hoping something fits your layout, you rough out the space the shape needs to fill and let the tool handle the curves.
The controls are extensive: size, rotation, skew on both axes, stroke width and opacity, two-shape layering, solid or gradient fills, pattern overlays with adjustable colour, angle and scale, plus overall opacity and curve tension. Free, no account, and you can copy the SVG markup or save the file. Placing points is slower than clicking randomise, which is exactly the trade you are making.
MagicPattern Blob Generator
The best-known of the three and the strongest on fills. Beyond shape complexity, edge count and randomness, it handles solid colours, linear and radial gradients, patterns from their collection, or your own uploaded image as the fill — so the blob can be a masked photo rather than a flat shape. Export covers SVG, PNG, JPG and CSS, the last being useful when the blob is a section background.
No account is needed and it is free to use, but Pro plans unlock watermark-free exports and high-resolution downloads. That is the thing to check before it becomes load-bearing in a design.
SVG Blob Generator
Ours generates a random smooth organic blob as SVG using a Catmull-Rom spline, with adjustable point count and randomness, entirely in your browser. The spline is why the curves stay smooth as you add points — the curve passes through the control points rather than being pulled toward them, so more points means more detail rather than a lumpier outline.
What it does not do: gradient or image fills, PNG export at chosen resolutions, bezier handle editing, or a seed for reproducing a shape later. If a specific shape matters, GraphMake’s nodes panel and seed will serve you better. If you want an SVG blob in ten seconds with nothing to learn, ours is fewer decisions. The output is a single SVG path element, so it drops straight into markup.
Which one to pick
- A shape you will need to reproduce later — GraphMake, for the seed.
- Fitting a shape around an existing layout — ssshape’s point drawing.
- A blob filled with a photo or gradient — MagicPattern.
- A quick clean SVG with no watermark question — the tool below.
How to do it with SVG Blob Generator
- Open the SVG Blob Generator and set the number of points — fewer for soft, more for detailed.
- Adjust randomness until the shape stops looking like a circle and starts looking organic.
- Regenerate until one fits the space you have.
- Copy the SVG and paste it into your markup or design tool.
The walkthrough is in how to generate a random SVG blob shape. Other design tools are in the tools directory.
You might also need
For section dividers rather than freestanding shapes, the SVG Wave Generator produces the curved edges that sit between two coloured bands.
If you are masking content to a shape rather than placing one behind it, the CSS Clip Path Maker is the tool that does that in CSS.
Frequently asked questions
Is there a free SVG blob generator with no watermark?
Yes. GraphMake states free with no watermark and commercial use without attribution, ssshape is free with no account, and ours adds nothing to the output. MagicPattern reserves watermark-free and high-resolution export for its Pro plans.
Can I edit the blob after generating it?
Any SVG output can be opened in a vector editor and reshaped. GraphMake also lets you edit bezier handles and node coordinates in the tool itself, which is quicker than exporting and reimporting.
Should I use SVG or PNG for a blob background?
SVG, almost always. It is a handful of path data rather than an image file, scales to any screen without blurring, and its colour can be changed in CSS. PNG only makes sense when the blob contains a photo or a complex gradient fill.
Final thought
Pick the tool by how much the shape has to fit something. A decorative blob behind a hero image can be random; one that has to hug a specific block of content needs points you can move, and only some of these let you move them.