1AdvanceCOMP PNG Compression UGteinleirtayl(1C)ommaAnddvsanMcaenCuOaMlP PNG Compression Utility(1)
2
3
4

NAME

6       advpng ‐ AdvanceCOMP PNG Compression Utility
7

SYNOPSIS

9       advpng [‐l, ‐‐list] [‐z, ‐‐recompress] [‐0, ‐‐shrink‐0]
10            [‐1, ‐‐shrink‐fast] [‐2, ‐‐shrink‐normal [‐3, ‐‐shrink‐extra]
11            [‐4, ‐‐shrink‐insane] [‐f, ‐‐force] [‐q, ‐‐quiet]
12            [‐h, ‐‐help] [‐V, ‐‐version] FILES...

DESCRIPTION

14       The  main purpose of this utility is to recompress png files to get the
15       smallest possible size.
16
17       Please note that this utility is not able to read a generic file.  It’s
18       granted  to be able to read only the files generated by the AdvanceMAME
19       emulator.
20
21       To compress the files this utility uses the following strategies:
22       ·      Remove all ancillary chunks.
23       ·      Concatenate all the IDAT chunks.
24       ·      Use the 7zip Deflate implementation.
25

OPTIONS

27       ‐l, ‐‐list FILES...
28              List the content of the specified files.
29
30       ‐z, ‐‐recompress FILES...
31              Recompress the specified files. If the ‐1, ‐2,  ‐3  options  are
32              specified  it’s  used the smallest file choice from the previous
33              compressed data and the new compression. If  the  ‐0  option  is
34              specified the file is always rewritten without any compression.
35
36       ‐0, ‐‐shrink‐store
37              Disable  the  compression.  The file is only stored and not com‐
38              pressed. The file is always rewritten also if it’s bigger.
39
40       ‐1, ‐‐shrink‐fast
41              Set the compression level to ˝fast˝.
42
43       ‐2, ‐‐shrink‐normal
44              Set the compression level to ˝normal˝. This is the default level
45              of compression.
46
47       ‐3, ‐‐shrink‐extra
48              Set the compression level to ˝extra˝.
49
50       ‐4, ‐‐shrink‐insane
51              Set the compression level to ˝insane˝.
52
53       ‐f, ‐‐force
54              Force the use of the new file also if it’s bigger.
55

57       This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima
58

SEE ALSO

60       advzip(1), advmng(1), advdef(1)
61
62
63
64                                        AdvanceCOMP PNG Compression Utility(1)
Impressum