pnm decoding and encoding
| ofs | hex dump | ascii |
|---|---|---|
| 0000 | 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 00 14 00 00 00 0f 08 04 00 00 00 4e 91 27 | .PNG........IHDR.............N.' |
| 0020 | de 00 00 00 01 73 52 47 42 00 ae ce 1c e9 00 00 00 31 49 44 41 54 78 da 63 a0 15 f8 0f 05 44 28 | .....sRGB........1IDATx.c.....D( |
| 0040 | 24 da 44 12 2c 06 d1 08 47 20 b3 51 94 22 58 c8 18 cd 36 84 10 2d 15 62 ba 91 8e 41 87 b0 9a 36 | $.D.,...G..Q."X...6..-.b...A...6 |
| 0060 | a9 01 00 e2 a9 6b 95 00 04 be c3 00 00 00 00 49 45 4e 44 ae 42 60 82 | .....k.........IEND.B`. |