JPEG encoding loses information. But it is JPEG decoding that introduces artifacts by filling the missing information with noise. jpeg2png is smarter and fills the missing information to create the smoothest possible picture.
JPEG encoding loses information. But it is JPEG decoding that introduces artifacts by filling the missing information with noise. jpeg2png is smarter and fills the missing information to create the smoothest possible picture.
To install jpeg2png, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install jpeg2png
To see what files were installed by jpeg2png, run:
port contents jpeg2png
To later upgrade jpeg2png, run:
sudo port selfupdate && sudo port upgrade jpeg2png
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