1,. Adjusting the screen size can effectively eliminate the aliasing phenomenon and keep the high-definition png 16 pixel icon from aliasing.

2. When softening the edge of the image, we can effectively eliminate the aliasing by using fuzzy and feathering techniques, and make a high-definition png 16 pixel icon without aliasing.

3. Using anti-aliasing filter, you can make high-definition png 16 pixel icon without aliasing. Png is a portable network graphic, a bitmap format of lossless compression algorithm, and supports three color schemes: index, grayscale, RGB and Alpha channel.