You can use the macOS Finder's Copy command to copy and paste files. But here's how to use the same command to copy file icons into Preview.

Learn how to show or hide file icon overlay on thumbnails in Windows 11/10 using File Explorer Options and Registry Editor.

This guide describes how to create an icon in Microsoft Paint. All you need to do is set a canvas, draw your icon, and save the file in .ico format.

Want smaller icons on your PC? This guide shows you how to change desktop icon size in Windows 10 quickly and simply.