TLDR
Enter a command. For example: rails db, gcc, dd, hunspell, docker service.

pngcheck

 
Print detailed information about and verify PNG, JNG, and MNG files. More information: http://www.libpng.org/pub/png/apps/pngcheck.html.
 
  • Print a summary for an image (width, height, and color depth):
     
    pngcheck {{image.png}}
     
  • Print information for an image with [c]olorized output:
     
    pngcheck -c {{image.png}}
     
  • Print [v]erbose information for an image:
     
    pngcheck -cvt {{image.png}}
     
  • Receive an image from stdin and display detailed information:
     
    cat {{path/to/image.png}} | pngcheck -cvt
     
  • [s]earch for PNGs within a specific file and display information about them:
     
    pngcheck -s {{image.png}}
     
  • Search for PNGs within another file and e[x]tract them:
     
    pngcheck -x {{image.png}}

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