Aha, when I remove the chunk
Code:
00 00 00 09 76 70 41 67 00 00 00 64 00 00 00 64
00 87 26 5E E6
from the file, it stops resizing it. It did not do that when I removed the gama, srbg, chrm, phys chunks. *plays some more*
the chunk is 9 bytes long, and its flag is [dec] 118 113 65 103. I don't know what that is used for. . .
[edit- Bam, I think I got it. that chunk is "vPag", or virtual page which is something imagemagick (server image manipulation package) responds to. The image you have dear has it set to [hex] 64, or a height/width of 100. ]