Canvas roundRect()The roundRect() methods draw a rounded rectangle to a 2D canvas.canvasCanvaswidely2023-04-112025-10-11https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-roundrecthttps://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/roundRectapi.CanvasRenderingContext2D.roundRectapi.OffscreenCanvasRenderingContext2D.roundRecthttps://nowyoucanuse.com/features--canvas-roundrect.html