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Blob Shape Generator: Organic Shapes with CSS Border-Radius

By Bilawal Hussain · 4 November 2026 · 2 min read
Blob Shape Generator: Organic Shapes with CSS Border-Radius

Create soft organic blob shapes and custom corner radii with pure CSS, perfect for modern hero sections and avatars.

Open the free Border Radius & Blob Generator →

What is the Border Radius & Blob Generator?

Make organic blob shapes and custom corner radii with CSS border-radius. It's completely free, needs no sign-up and works on any phone or computer.

Screenshot of the Border Radius & Blob Generator on ReadyToUse
The Border Radius & Blob Generator, as it looks on ReadyToUse.

Why it's helpful

Who it's for

Web designers and front-end developers.

How to use it

  1. Drag the sliders or click Random blob.
  2. Copy the CSS into your stylesheet.
💡 Pro tip: Animate between two blob shapes with a CSS transition for a subtle living effect.

💻 Open source: this tool is free and open source (MIT License). View the code on GitHub, download it and run it offline.

The bigger picture: Design

Good design builds trust in seconds. Colour, typography, spacing and accessibility tools help developers and small businesses create websites that look professional without hiring a full design team.

What's changing: Accessibility is moving from nice-to-have to expected, and modern CSS now does with a few lines what used to need images and JavaScript.

Frequently asked questions

What does the slash mean?

Values before the slash set horizontal radii; values after set vertical radii, which creates the organic shape.

Ready to try it?
Use the Border Radius & Blob Generator free →
No sign-up · Runs in your browser

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BH
Bilawal Hussain
Full-stack developer in Dubai and creator of ReadyToUse: free tools that just work. Connect on LinkedIn