The "Small icons" setting is usually quite tiny—great for people with 4K monitors or impeccable eyesight!
This method allows you to cycle through dozens of size increments rather than just the three standard presets. Make Taskbar Icons Smaller how to make icons smaller on windows
This method works in File Explorer, too! If your documents folder looks cluttered, use the same trick to shrink the file icons and see more files at once. The "Small icons" setting is usually quite tiny—great