For users who want more than the standard presets, the system settings menu provides finer granularity.
Click on an empty area of your desktop to make Finder active. Then, hold down the Control (Ctrl) key and scroll up or down with your mouse wheel or two fingers on a trackpad. Alternatively, on a Mac trackpad, you can use a pinch gesture (pinch in to make icons smaller, spread two fingers apart to make them larger). This method offers a smooth, continuous range of sizes. how to adjust desktop icon size
If you resized an icon to be "Large" and it looks blurry, the original file likely has a low resolution. Try finding a higher-resolution version of the image or file. Windows icons look best at the "Medium" or "Large" presets; stretching them too far using the scroll wheel can degrade quality. For users who want more than the standard
on your mouse up (to enlarge) or down (to shrink). Alternatively, on a Mac trackpad, you can use
The “Show View Options” panel (Method 2) actually provides the most advanced control. Besides the slider, you can set the grid spacing, text size, and label position. For even more control, third-party apps like TinkerTool allow you to set non-standard icon sizes.
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