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Organic "blob" shapes are a popular modern design accent behind images, headings, and call-to-action sections. This tool generates a smooth, randomized blob shape you can copy straight into a project — and because it's seed-based, the exact same shape can be regenerated again later.
How it works
Set the blob's size, number of anchor points around its circumference, how irregular each point's radius should be, a seed number, and a color. The tool uses the seed to generate the point positions (so the same seed always produces the identical blob), connects them with smooth curves, and outputs ready-to-use SVG markup.
- Enter size (px).
- Enter anchor Points.
- Enter irregularity (0-100).
- Enter seed.
- Enter color.
- Click Calculate to see your results.
Examples
Getting a different variation
Keeping every setting the same but changing only the seed number produces a completely different blob shape — a quick way to browse variations until you find one you like, then keep that seed to reproduce it exactly.
Who should use it
- Website hero-section and background decorative accents.
- Quick placeholder or prototype graphics.
Industry applications
- Web design and front-end development
- UI/UX prototyping and branding
Advantages
- Fully reproducible via the seed — no shape is ever "lost."
- Instant, copy-paste-ready SVG markup.
Limitations
- Randomized shapes are less predictable to fine-tune than a precise geometric shape — browsing a few seeds is the practical way to find one you like.
Common mistakes to avoid
- Assuming re-generating without changing the seed will give a new random shape — it won't, by design, since the seed makes it fully reproducible.
- Setting irregularity very high with very few points, which can occasionally produce a shape with a sharper, less "organic" look than intended.
Best practices
- Try a handful of different seed values to browse shape variations before picking a final one.
- Keep a note of the seed you used if you want to reproduce or slightly tweak the exact same blob later.
Tips
- A moderate point count (6-10) with moderate irregularity (20-50) tends to give the smoothest, most conventionally "organic" look — very high point counts or irregularity can look more jagged.