CSS Border Radius & Fancy Blob Generator
Interactive visual design studio for standard, concentric nested, and organic 8-value CSS3 border radius declarations.
Direct Answer & Pipeline Overview
CSS Border Radius & Smooth Squircle Generator is a specialized, 100% client-side engineering utility developed by Atlyxen Studios. It processes calculations and conversions directly inside your browser memory using hardware-accelerated WebAssembly and WebGL, guaranteeing instant results with zero server file transfers and zero data retention.
How to Use the CSS Border Radius & Smooth Squircle Generator
Select Design Mode
Choose Concentric & Corners for standard web UI cards or Fancy 8-Value Blob for organic fluid shapes.
Adjust Curvature Controls
Drag corner sliders, link all corners for uniform squircles, or adjust dual-axis handles for asymmetric forms.
Calculate Concentric Nesting
Use the Concentric Math Engine to automatically match container radius and internal padding for pixel-perfect card layouts.
Copy Ready CSS
Click Copy CSS or grab the Tailwind CSS arbitrary class to paste directly into your project.
Key Technical Capabilities
Interactive real-time canvas preview of box curvature and fluid morphing shapes
Concentric nested box math engine computing optimal inner child radii (R_inner = R_outer - padding)
Advanced 8-value dual-axis syntax support for organic blobs and fluid shapes
Independent controls for all four corners with unified linking toggle
Measurement units in pixels (px), percentages (%), and rems
Tailwind CSS arbitrary class generation for modern frontend workflows
One-click CSS code export for container and nested child components
100% client-side execution with zero latency
Frequently Asked Questions
What is the 8-value border-radius syntax?
The CSS specification allows up to eight values separated by a slash (e.g., border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%). Values before the slash define horizontal radii, and values after define vertical radii, creating smooth organic blob shapes.
Why is concentric border radius important for nested cards?
When a card has rounded corners and contains an inner element (like an image or button), using the same border-radius makes the inner corner look pinched and awkward. Concentric math requires R_inner = R_outer - padding, ensuring both curves share the same center of curvature.
Is the generated CSS compatible with all web browsers?
Yes. The CSS3 border-radius declaration (including the 8-value slash syntax) is fully supported across 100% of modern web browsers without vendor prefixes.
Can I export Tailwind CSS classes directly?
Yes. The tool automatically generates the corresponding Tailwind arbitrary rounded-[...] utility class.