[7474] in www-talk@info.cern.ch
Re: Transparent GIFs
daemon@ATHENA.MIT.EDU (hosono@si.gunma-u.ac.jp)
Wed Feb 1 21:01:35 1995
Date: Thu, 2 Feb 1995 02:27:35 +0100
Errors-To: listmaster@www0.cern.ch
Reply-To: hosono@si.gunma-u.ac.jp
From: hosono@si.gunma-u.ac.jp
To: Multiple recipients of list <www-talk@www0.cern.ch>
>>>>> Steve Cameron <stevecam@interactive.net> writes:
SC> While we're in the GIF neighborhood, is anyone aware of a method to create
SC> transparent GIF files to be used with a browser to give a layered
SC> effect??
To create transparent GIF file, I use the "netpbm" package in UNIX,
and "Transparency" in Macintosh.
In the netpbm package,
1. giftopnm foo.gif > foo.ppm
2. ppmtogif -transparent #rgb foo.ppm > foo-trans.gif
where '#rgb' indicate the color you make transparent,
e.g. #ffffff (white).
In Transparency, you click the image, selecting the color you make
transparent, and then "Save As GIF89...".
+--------------------------------------------------+
| Fumio HOSONO ( E-mail: hosono@si.gunma-u.ac.jp ) |
| Faculty of Social and Info. Studies, Gunma Univ. |
| [URL] http://www.si.gunma-u.ac.jp/~hosono/ |
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