Re: Transparent Gifs

Paul Phillips (
Wed, 29 Jun 1994 11:12:12 -0700 (PDT)

Please make an effort to keep up with the FAQ, everyone. This thread has
been done to death on comp.infosystem.www.* and has been reflected in the
FAQ for some time.

-- Begin excerpt --
4.9: How can I make transparent GIFs?

Transparent GIFs are useful because they appear to blend in smoothly
with the user's display, even if the user has set a background color
that differs from that the developer expected.

There is a document explaining transparent GIFs available at the URL You can fetch
the program giftrans by anonymous ftp from at
the path /pub/net/www/tools/giftrans.c.
-- End excerpt --


On Wed, 29 Jun 1994, Simeon Warner wrote:

> I think Malcolm Vincent's request is very pertinent, pity I don't know if
> it is possible. A couple of times I've thought I've seen transparent gifs
> but each time the originator has just used the default Mosaic background
> (I've now changed my background so I can see the cheating!). Do we really
> have to resort to xbm's which are, unfortunately, rather large?