Mac OS Graphics & Design
PNG mini converts 24-bit PNG to paletted 8-bit with full alpha channel. This greately reduces file sizes with only minor loss of quality. Quantized files are often 40-80% smaller than their 24/32-bit version, fully standards-compliant, and supported by all web browsers.
Drag 24-bit PNG image into main part of the window. Click "Compress" and then the small images should be converted and saved to the folder you specify .
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1. Significantly better quality of quantization
2. Generated files smaller