例)
8x8
0000000: 8950 4e47 0d0a 1a0a 0000 000d 4948 4452  .PNG........IHDR
0000010: 0000 0008 0000 0008 0802 0000 004b 6d29  .............Km)
0000020: dc00 0000 0173 5247 4200 aece 1ce9 0000  .....sRGB.......
0000030: 0004 6741 4d41 0000 b18f 0bfc 6105 0000  ..gAMA......a...
0000040: 0020 6348 524d 0000 7a26 0000 8084 0000  . cHRM..z&......
0000050: fa00 0000 80e8 0000 7530 0000 ea60 0000  ........u0...`..
0000060: 3a98 0000 1770 9cba 513c 0000 001a 4944  :....p..Q<....ID
0000070: 4154 1857 6360 2019 fcc7 0118 704a 205b  AT.Wc` .....pJ [
0000080: 81ac 08c5 6aca 2400 92e9 5fa1 3cdc a6ee  ....j.$..._.<...
0000090: 0000 0000 4945 4e44 ae42 6082            ....IEND.B`.


◆IDAT Chunkの内容(エンコーダの性格によって内容は変わる)
 00 00 00 1a …データのバイト数(26バイト)
 49 44 41 54 …Chunkタイプ(IDAT)
 18 57 63 60 20 19 fc c7 01 18 70 4a 20
    5b 81 ac 08 c5 6a ca 24 00 92 e9 5f a1
 …画像データ
 3c dc a6 ee …CRC


◆画像データの内容
 18 …CMFバイト
 57 …FLGバイト
 63 60 20 19 fc c7 01 18 70 4a 20 5b 81 ac 08 c5 6a ca 24 00 …DEFLATEデータ
 92 e9 5f a1 …Adler-32 チェックサム値


◆DEFLATEデータの内容
 各バイトのLSBを左にして一本のビット列にしたもの。
 11000110 00011111 11110011 00000011 00000000 00100010 00000110
 01000111 11111100 00100001 00000001 00000000 01100100 00010100
 10110001 10000010 10001100 01111111 11100001 00010100 10000110
 00100001 10010110 11000000 01001100 10010000 00010111 00000010
 01101100 11000111 11111100 00101010 11011100 01111010 11011100
 00001110 01011010 01110001 11001010 01000000 00000000 


 1: last block
 01: compressed with fixed Huffman codes(10と読み間違えないよう注意)
 00110000: [00]
 111111111: [ff]
 00110000: [00]
 00110000: [00]
 0000001  00010 : LEN[3] DIST[3]
 0000011  00100 0: LEN[5] DIST[5]
 111111111: [ff]
 0000100  00100 0: LEN[6] DIST[5]
 0000100  00000 : LEN[6] DIST[1]
 00110010: [02]
 0000101  00101 1: LEN[7] DIST[8]
 0001100 0 00101 0: LEN[17] DIST[7]
 00110001: [01]
 111111111: [ff]
 0000100  01010 0100: LEN[6] DIST[35]
 00110001: [01]
 0000110  01011 0110: LEN[8] DIST[55]
 0000001  00110 01: LEN[3] DIST[11]
 0010000 00 01011 1000: LEN[31] DIST[50]
 0001001 1 01100 11000: LEN[12] DIST[68]
 111111111: [ff]
 0000101  01011 0111: LEN[7] DIST[63]
 0001111 01 01101 11000: LEN[29] DIST[100]
 0001110 01 01101 00111: LEN[25] DIST[125]
 0001110 01 01001 000: LEN[25] DIST[25]
 0000000: end of block


◆復元されたPNGデータ
 00 ff 00 00 ff 00 00 00 00 ff 00 00 ff 00 ff 00 
 00 ff 00 00 00 00 00 00 00 02 00 00 00 00 00 00 
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 00 00 01 ff ff 00 00 00 00 00 01 ff 00 00 00 00 
 ff 00 00 00 00 01 00 00 00 00 00 02 00 00 00 00 
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 
 00 ff ff ff 00 00 00 00 00 00 00 00 00 02 00 00 
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
 00 00 00 00 00 00 00 00