89 50 4E 47 0D 0A 1A 0A 00 00 00 0D 49 48 44 52
00 00 00 01 00 00 00 01 08 02 00 00 00 90 77 53
DE 00 00 00 0C 49 44 41 54 08 D7 63 60 60 60 00
00 00 04 00 01 27 34 27 0A 00 00 00 00 49 45 4E
44 AE 42 60 82

File: test.png
89 50 4E 47 0D 0A 1A 0A
  Header 0x89 "PNG" CR LF ^Z LF checks out okay
===========
00 00 00 0D
49 48 44 52
00 00 00 01 00 00 00 01 08 02 00 00 00
90 77 53 DE
  block:  "IHDR", 13 bytes [49484452]
  Width:              1
  Height:             1
  Bit depth:          8
  Color type:         2 = Color
  (Bits per pixel: 8)
  (Bytes per pixel: 3)
  Compression method: 0
  Filter method:      0
  Interlace method:   0 (none)
  CRC: 907753DE
===========
00 00 00 0C
49 44 41 54
08 D7 63 60 60 60 00 00 00 04 00 01
27 34 27 0A
  block:  "IDAT", 12 bytes [49444154]
  expanded result: 4 (as expected)
  (Row   0 Filter:0)
  decompresses into
  00 00 00 00
  CRC: 2734270A
===========
00 00 00 00
49 45 4E 44
AE 42 60 82
  block:  "IEND", 0 bytes [49454E44]
  CRC: AE426082