Windows Icon File Size [updated] Here

| Icon type | Dimensions | Color depth | Compressed size | |-----------|------------|--------------|------------------| | Small folder icon | 16×16 | 32-bit | ~1–3 KB | | Desktop shortcut | 32×32 | 32-bit | ~4–8 KB | | App icon (legacy) | 48×48 | 32-bit | ~10–15 KB | | Modern app icon (all sizes) | 16–256 | PNG | 30–150 KB | | Ultra-high-res icon | Up to 768×768 | PNG | 200 KB – 1 MB |

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

To keep file sizes in check, Microsoft has also implemented advanced compression algorithms, such as the LZ77 compression algorithm used in Windows 10. This algorithm can compress icon files by up to 50%, making it possible to store high-quality icons without excessive file sizes. | Icon type | Dimensions | Color depth

To look sharp on modern high-resolution screens, Windows requires larger source images: To look sharp on modern high-resolution screens, Windows

Here’s a short, analytical piece on — focusing on how .ico files handle size, why it matters, and the technical trade-offs.

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).