Message-Id: <mailto:199502090557.XAA08227@library.wustl.edu> Date: Wed, 8 Feb 1995 21:19:59 -0500 From: John Weise <mailto:jweise@UMICH.EDU> Subject: Re: Problem with GIF Files To: Multiple recipients of list IMAGELIB
John Weise .................................................................. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ University of Michigan ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^On Wed, 8 Feb 1995, Katherine Villyard wrote:
> Hi, Holli! > > Holli Rossi said: > >We are in the process of setting up
a MACHTTP server. I have not had any > >luck with being able to fiew GIF images through Mosaic. I did find that I > >was able to view JPEG documents (that I had converted from GIF). What would > >I need to be able to access the GIF format documents? Also, I am looking for > >a MAC conversion utility that will allow me to convert TIFF files to GIFF-- > >ON THE MAC. So far, I have had to take a TIFF file to my PC and use a PC
> >conversion program to convert to GIF. I then, of course, had to bring
> >the GIF file back over to the MAC. Any ideas on what I could use? > >
Well, I don't know if I'm an expert or not, but we DID watch/help our > instructor set up a MacHttp server in my Internet class... > > I thought that GIF converter came as part of Mosaic. GIF is a shareware kinda > program that you SHOULD be able to get, maybe on ftp://ftp.ncsa.uiuc.edu (where > you get mosaic and MacHttp)??? We used GIF converter to convert PICT files to > GIF files so it SHOULD convert TIFFs too... > GIFconverter Hi, Holli! >
> Holli Rossi said:
> >We are in the process of setting up a MACHTTP server. I have not had any
> >luck with being able to fiew GIF images through Mosaic. I did find that I
> >was able to view JPEG documents (that I had converted from GIF). What would
> >I need to be able to access the GIF format documents? Also, I am looking for
> >a MAC conversion utility that will allow me to convert TIFF files to GIFF--
> >ON THE MAC. So far, I have had to take a TIFF file to my PC and use a PC
> >conversion program to convert to GIF. I then, of course, had to bring
> >the GIF file back over to the MAC. Any ideas on what I could use?
>
> Well, I don't know if I'm an expert or not, but we DID watch/help our
> instructor set up a MacHttp server in my Internet class...
>
> I thought that GIF converter came as part of Mosaic. GIF is a shareware kinda
> program that you SHOULD be able to get, maybe on ftp://ftp.ncsa.uiuc.edu (where
> you get mosaic and MacHttp)??? We used GIF converter to convert PICT files to
> GIF files so it SHOULD convert TIFFs too...
>
GIFconverter may do TIFF, but there are many, many file formats out there, and it only does a handful. may do TIFF, but there are many, many file formats out there, and it only does a handful.
> Of course I took the course but don't own my own computer :) so maybe I
> shouldn't make sweeping statements about what Mosaic does and doesn't come
> with... :)
>
> >I don't want to say that we have ruled out using JPEG documents. I was told
> >that JPEG is becoming more common. I originally wanted to use GIF because
> >I thought that the GIF format is what most Web clients can handle. Comments
> >anyone??
>
JPEG and GIF have very different capabilities and somewhat different uses. GIF only handles 256 colors, JPEG does millions. JPEG uses lossy compression in order to achieve very high compression rates, GIF uses lossless compression.
> My university is using an old version of Mosaic and it handles both GIF and
> JPEG. I was under the impression that GIF was more common than JPEG at this
> point. I don't think it'll make THAT much of a difference either way.
It handles them both, but it is only able to display GIF images embedded within text. JPEGs are handed off to another application for display.
>
> I would see if the ftp site at ncsa or sunsite had GIF converter for Mac and
> see if that "fixed" things before going with JPEG, just because it sounds like
> there might be something missing on your Mosaic.
>
JPEGView is a great program for viewing both GIF and JPEG images. GIFconverter is a good program also.
JPEGView has extraordinary online help.
> >Thanks for your help.
>
> Hey, anytime, I just hope I WAS helpful!
>
> --Katherine Villyard
> School of Library and Information
> Studies
> Texas Woman's University, Denton, TX
> Graduating in May!!!!! :)
>