source: general/graphlib/libungif/libungif-intro.xml@ f22f96e9

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Last change on this file since f22f96e9 was 64d97b7c, checked in by Larry Lawrence <larry@…>, 19 years ago

update to sawfish-1.3, librep-0.16.2 and first round spell check

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1<sect2>
2<title>Introduction to libungif</title>
3
4<screen>Download location (HTTP): <ulink url="&libungif-download-http;"/>
5Download location (FTP): <ulink url="&libungif-download-ftp;"/>
6Version used: &libungif-version;
7Package size: &libungif-size;
8Estimated Disk space required: &libungif-buildsize;
9Estimated build time: &libungif-time;</screen>
10
11<para>The libungif package contains libraries for reading all gifs and
12writing uncompressed ones as well as programs for converting and working
13with gif files. The libraries are useful for any graphics program
14wishing to deal with gif files while the programs are useful for
15conversion purposes as well as cleaning up images.</para>
16
17<para>The reason libungif only writes uncompressed gifs is due to a
18legal issue with LZW compression (which Unisys claims a patent on).
19Reading gifs is not a problem as the uncompression routines do not seem
20to be limited in this way. Note that this has in the past been
21disputed. The best way to avoid this whole mess is to simply use
22libungif for looking at gif images on the web, whilst in any pages which
23you design, use the open source png format instead (which uses, not
24surprisingly, the libpng library) which has no patent issues at
25all.</para>
26
27</sect2>
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