PNG File Extension - What is a .png file and how do I open it?
https://fileinfo.com/extension/png
The PNG format is widely used, especially on the web, for saving images. It supports indexed (palette-based) 24-bit RGB or 32-bit RGBA (RGB with a fourth alpha channel) color images. The format also supports full-color, non-indexed RGB or RGBA images and grayscale images.. Many types of computer users may encounter PNG files, whether it be downloading an image from a website, receiving a ...
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