...but unpacking.
832MB --> 3.01GB
Precomp 0.4.8 -intense0 -cn --> 3.43GB! (Pack it RZ with d1023M -> 328MB.)
xzlibbed or precompressed data compress via srep+bliz/xlzma. Compressed results?? No difference! Smaller than 100kB's. Without srep compress = loose ~15% final ratio.
Tested blizzard = better than faster xlzma compression. Precomp precompressed results equal the any tiny png-set results, see it:
https://encode.su/threads/3964-Best-...cartoon-images
precomp+srep:m3f:a0+bliz --> 358MB (simple "-intense -cn" mode, not brute'd.) LOLZ/DLZ not tested, wait results...