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Pincrush is an open PNG optimizer implementing Apple's proprietary CgBI format.
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Latest commit 4efdcb0 @DHowett Update the Makefile to automatically fetch theos (git submodules!) if…
… it's missing. Update the README to contain compilation instructions and remove the erroneous mention of a local Theos.

README.md

An attempt to replicate Apple's PNG Mangler.

Apple's PNG files are nowhere near valid (extra critical chunk with an unknown format, zlib headers discarded, premultiplied alpha). "Think different" and all that.

Prerequisites

  • a compiler
    • (for iPhone compilation) Apple's Xcode or the open toolchain

Compiling

  • iPhone (default target)

    make
    
  • Native (linux, OS X)

    make target=native
    
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