Preview
Controls
About SVG Blobs
SVG blob shapes have become a popular design element in modern web interfaces. These organic, fluid shapes add visual interest and help create more dynamic, playful designs compared to traditional geometric shapes.
Common Uses
- •Hero Backgrounds: Create eye-catching backgrounds for landing pages
- •Decorative Elements: Add visual interest to cards and sections
- •Image Masks: Create organic shapes for image containers
- •Loading Animations: Morphing blobs for engaging loaders
Why SVG?
SVGs are perfect for blob shapes because they scale infinitely without losing quality, have tiny file sizes, and can be styled with CSS. You can easily change colors, add animations, and even morph between different blob shapes.
How the Generator Builds a Blob
Every blob starts as a ring of anchor points spaced evenly around a circle. The Complexity slider sets how many of those points there are: three produces a rounded triangle-ish form, twelve gives a busier, more irregular outline. Each point is then nudged inward or outward by a random amount, and the size of that jitter is controlled by Smoothness: at 100% the points stay close to the circle for a calm, rounded silhouette, while lower values let them wander far from the centre to create spikier, more unpredictable shapes.
The visible curve is drawn with cubic Bézier segments rather than straight lines. For each pair of neighbouring anchors the generator calculates two control points based on the surrounding points, which is what gives the outline its flowing, hand-drawn feel instead of a jagged polygon. Because the entire path is described as a compact <path d="..."> string, the resulting file is only a few hundred bytes. Everything is generated right here in your browser, and nothing is uploaded to a server.
Choosing an Export Format
- •SVG Code: paste directly into HTML when you want to animate or recolour the shape later with CSS.
- •CSS Background: the blob is inlined as a data URI, handy for decorating a section without adding an extra file.
- •CSS Clip-Path: crops any element (like a photo or a div) into the blob outline using percentage coordinates.
- •React / Vue Component: a ready-made component with configurable
sizeandcolorprops to drop into a project.
Frequently Asked Questions
Will I get the same blob every time I open the tool?
No. The shape is built from random offsets applied to each anchor point, so every visit (and every click of Randomize) produces a unique blob. Once you have one you like, export or download it immediately, because refreshing generates a fresh shape.
How do the Complexity and Smoothness sliders differ?
Complexity sets how many anchor points form the outline, controlling how many bumps the blob can have. Smoothness controls how far each point is allowed to drift from the base circle: high smoothness keeps the shape rounded and gentle, while low smoothness produces sharper, spikier edges.
When should I use clip-path instead of an SVG background?
Use clip-path when you want to crop an existing element (such as a photo, video, or coloured box) into a blob outline. Use the SVG or CSS background export when the blob itself is the visual, for example as a decorative shape behind text or inside a card.
Can I animate the blob?
Yes. Because the shape is a standard SVG path, you can transition or morph it with CSS animations or libraries that interpolate the d attribute. A common technique is to slowly cross-fade between two blob paths to create a gentle, liquid motion.
Is the gradient option baked into the exported file?
When you enable the gradient, a linearGradient definition using your two chosen colours is written into the exported SVG and CSS background, so the gradient travels with the file. The React and Vue components export a single solid fill colour prop by default.
Pro Tips
- •Use lower complexity (3-5 points) for smoother, simpler shapes
- •Higher complexity (8-12 points) creates more detailed, organic shapes
- •Gradients work great for creating depth and visual interest
- •CSS animations can make blobs slowly morph for subtle motion
Related Tools
Need to convert your blob to other formats? Try our SVG Converter to transform SVG blobs into PNG or JPG images.
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