Here is a few minutes of hack which would hopefully help someone else:
pngchunks logo.png File size: 5967 byte(s) Offset Chunk Size 8 IHDR 13 33 iCCP 2627 2672 IDAT 3271 5955 IEND 0
Useful to quickly find out if we can further strip unnecessary chunks from the PNG image. Or even as a warming up before you fire your favorite hex viewer/editor.
It’s pure, stand-alone, self-contained C code (i.e. compile using gcc -o pngchunks pngchunks.c), available at the usual X2 repository, find it under graphics/pngchunks.