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What is a PNG file?


A PNG file is an image format with lossless compression that also has the file extension PNG  



PNG is short for Portable Network Graphics, it was introduced and defined in the nineties. PNG became a replacement and improved format for GIF images ! Unfortunately the animation function was not taken over by GIF!

The main feature of PNG images is lossless compression and the alpha channel, which enables transparency in images. Here on the picture you can see how the failure transparency can be used in a semi- transparent desktop clock!

For this:

►  What is Alpha Transparency?   and ►  What is RGB, RGBA, ABGR, ARGB (example, difference)?



The file extension * .png is used for the PNG file . The PNG format is widely used for storing images, especially on the Internet. It supports palette-based images, 24-bit RGB or 32-bit RGBA color images. 

More information on the official page:

►►  ... www.libpng.org .. pub .. png   and ►   ... WiKi Portable_Network_Graphics




(Image-1) Transparency using a PNG file in RGBA format!
Transparency using a PNG file in RGBA format!

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FAQ 221: Updated on: 26 September 2021 14:36 Windows
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Keywords: glossar, png, file, image, format, lossless, compression, extension, portable, network, graphics, Questions, Answers, Software




    

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