Modern Windows icons support (24-bit color + 8-bit alpha channel).
: The standard size for File Explorer when set to "Medium icons". windows icon file size
In recent years, Microsoft has continued to push the boundaries of icon design and file size optimization. With the introduction of High-DPI (dots per inch) displays, icons need to be even more detailed and crisp to look good on high-resolution screens. To address this, Microsoft introduced support for icons with resolutions up to 256x256 pixels and higher. Modern Windows icons support (24-bit color + 8-bit