A Python Script to convert Normal PNG Image to Apple iDOT PNG Image (Multi-threaded Decoding PNG).

Usage -i <inputfile> -o <outputfile> -t <threadnumber>

Input Params:

  • inputfile & outputfile: That’s it. Of course input file must be a PNG file.
  • threadnumber: Determines the number of image section, minimum is 2


  1. The precise format of iDOT chunk now we known is here Just go further than before.
  2. The speed of this task with Python is too slow and dangerous. Do not use this script in Production Environment.



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