Technical Documentation & User Guide

CSS Border Radius Generator Reference & Specifications

The CSS Border Radius Generator creates the asymmetric 'squircle' corner values that modern design systems use - where each corner can have its own horizontal and vertical radius. Standard 8-corner radius shorthand is easy; the eight-value form is not.

Drag the corner handles on the preview and copy the exact border-radius value that produces the shape you see.

Key Capabilities & Features

• Four independent corners with live handles.
• Horizontal and vertical radius per corner.
• Copy exact border-radius shorthand.

Step-by-Step Instructions

1. Drag the corner handles to shape the element.
2. Watch the preview update corner by corner.
3. Copy the resulting border-radius into your stylesheet.

Real-World Developer & Design Workflows

• Recreating squircle-style buttons and cards.
• Building customized pill and leaf-shaped elements.
• Designing origami-like corner treatments for hero panels.

Frequently Asked Questions

How does the eight-value radius work?

Border-radius accepts up to eight values (horizontal and vertical pairs per corner). The generator produces exactly this advanced shorthand.

Will asymmetric corners work in email?

Older email clients ignore advanced border-radius; provide sensible square or simple rounded fallbacks for newsletters.