Windows Icon File Size [better] -

So the “file size” of an icon is really the , plus a small header.

Modern Windows icons support (24-bit color + 8-bit alpha channel). windows icon file size

An .ico file is not just a single image; it is a that holds multiple versions of the same image at different sizes and color depths. This structure allows Windows to automatically select the sharpest, most appropriate size for the specific context (e.g., a tiny icon in the system tray vs. a large icon on your desktop). So the “file size” of an icon is