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CSS Border Radius Generator — Live Preview, Per-Corner Control

Adjust border radius per corner independently with a live preview — including elliptical (non-uniform horizontal/vertical) curves for effects like an organic blob shape — then copy the exact generated border-radius CSS shorthand.

How to use Border Radius Gen

  1. Adjust each corner's radius with sliders.
  2. Watch the live preview update.
  3. Toggle elliptical mode for non-uniform curves.
  4. Copy the generated CSS.

Frequently asked questions

Can each corner have a different radius?
Yes — the four corners are independently adjustable, generating the correct border-radius shorthand or longhand CSS for asymmetric shapes.
What is elliptical border-radius?
Setting different horizontal and vertical radius values per corner, using the CSS border-radius slash syntax — this is what produces organic, non-circular blob shapes rather than simple rounded corners.
Does the generated CSS work in all modern browsers?
Yes — border-radius, including the elliptical slash syntax, has broad support across all current major browsers.

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