The quiet death of the Mac icon silhouette

Louie Mantia’s history of the Mac app icon is a small elegy for craft. Mac OS X icons wore distinct silhouettes — a tool poking past the frame, a translucent sidebar edge, an organic character shape — and that variety did real work: it helped you find an app at a glance, alongside colour, lighting, and dimensionality.

Big Sur encouraged the iOS squircle without mandating it. Apple even broke its own boundary — the pen resting on TextEdit — and the designers who used the template thoughtfully bent the squircle without surrendering identity: Sketch’s translucent sidebar edge, Transmission’s gear handle poking out the top, Keka’s silhouette approximating the shape organically. Then the door closed, and the squircle became the only allowed shape.

This is exactly the kind of detail we care about. An icon shape isn’t decoration; it’s an affordance. Flattening a platform’s visual language toward a single rounded square trades identity for consistency, and it’s a loss most users will feel without being able to name. Craft tends to live in the exceptions a system is willing to allow — and a good platform leaves that door open.