What are PNG files and how do you open them? | Adobe
https://www.adobe.com/creativecloud/file-types/image/raster/png-file.html
WebWhat is a PNG file? PNG is short for Portable Network Graphic, a type of raster image file. It’s particularly popular file type with web designers because it can handle graphics with transparent or semi-transparent backgrounds. The file format isn’t patented, so you can open a PNG using any image editing software without the need for licensing.
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