What Sizes Does a Favicon Need?
Modern browsers and devices require several favicon sizes. The classic favicon.ico (16×16 or 32×32) is required for browser tabs. Apple devices need a 180×180 Apple Touch Icon. Android Chrome uses 192×192 and 512×512 for PWA home screen icons.
FAQ
What is the ideal input image for a favicon?
Use a square image (1:1 aspect ratio) with a simple, bold design that remains recognizable at 16×16 pixels. Avoid fine text or complex gradients. Your logo icon or a single letter works best.