iOS-Style Smooth Squircle Corners for the Web – CornerKit
A tiny JavaScript library for iOS-style smooth squircle corners. Zero dependencies, 98%+ browser support, 60fps performance.
JavaScript & CSS Squircle
Customizable Squircle Generator In JavaScript – Squircley.js
A JavaScript library (ES 6) that allows developers to generate customizable squircles (superellipses) as SVG, base 64, or background images.