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Border Radius Generator Documentation

Use the free Border Radius Generator →

Adjust each corner radius independently and copy the resulting CSS border-radius declaration.

What does it do?

Adjust each corner radius independently and copy the resulting CSS border-radius declaration.

How does it work?

SiteIndex lets you set each corner radius independently, previews the shape live, and generates the matching border-radius CSS shorthand.

When to use it
  • Create an organic or asymmetric card shape.
  • Match a design mockup's exact corner rounding.
  • Preview a shape before implementing it in CSS.
Inputs and outputs
Input
Text, files, or values entered in the browser, depending on the tool.
Output
A result shown in the browser that can be reviewed or copied where supported.
Limitations
  • Pixel and percentage radii and independent elliptical axes are supported. Appearance depends on the element's dimensions.
Privacy and data handling

Inputs for this browser-side tool are processed locally and are not sent to SiteIndex. Normal page analytics may still be collected as described in the Privacy Policy. Read the Privacy Policy.

How to use it

  1. Choose whether all four corners stay linked.
  2. Adjust corner sliders and inspect the preview.
  3. Copy the border-radius declaration and apply it to the intended element.

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