Does not affect icon labels’ maximum length or truncation behavior (long names will still wrap or clip).
If you make a mistake or the icons look chaotic: how to make icons smaller on mac
(Default ~64; smallest ~16; largest ~128.) Does not affect icon labels’ maximum length or
Finder allows you to set specific icon sizes for individual folders, or apply a smaller size globally across all folders. How To Change Desktop Icon Size On Mac but still readable).
System Settings (macOS Ventura+) → Desktop & Dock → Size slider (under “Dock”). Drag left to make icons smaller (minimum is tiny, but still readable).