Re: Writing GIFs

2002-09-12 Thread Matthew Weier O'Phinney

--Bob Proulx [EMAIL PROTECTED] wrote
(on Wednesday, 11 September 2002, 09:16 PM -0600):
 Craig Dickson [EMAIL PROTECTED] [2002-09-11 10:55:37 -0700]:
  I realize I am a terrible person for wanting to violate Unisys's
  patents, but I'm working on a web site that I think will often be
  visited by people with old browsers (it's the site for the elementary
  school my daughter attends), so rather than use PNGs, I think I'd be
  better off with GIFs.
 
 I have always prefered jpegs since they load faster.  I like that fact
 that most browsers will show you the image as it downloads and
 therefore it feels faster to me on slow connections.
 
 Don't all browsers support .jpg format?  (I really don't know but had
 always assumed so.)
Yes, but then there's the aspect of transparency -- jpegs cannot do
transparency; gifs can. This is part of the reason png is seen as a nice
format -- it has taken strengths from both jpeg and gif formats.
Unfortunately, it doesn't compress as much (in tests I've done, pngs
of images tend to be larger than an equivalent jpeg), and older browsers
(read Netscape 4, IE 4) don't read them. (Somebody correct me if I'm
wrong -- but some of my clients use older versions of each of these
browsers and cannot see pngs.)

--Matthew


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Writing GIFs

2002-09-11 Thread Craig Dickson

I realize I am a terrible person for wanting to violate Unisys's
patents, but I'm working on a web site that I think will often be
visited by people with old browsers (it's the site for the elementary
school my daughter attends), so rather than use PNGs, I think I'd be
better off with GIFs. GIMP 1.2, even with the gimp-nonfree package,
seems only to read GIFs, not write them. Does anyone know of a good,
free-at-least-as-in-beer Linux program to translate PNGs and/or BMPs to
compressed GIFs? If not, I guess I'll have to use Microsoft Photo Editor
on Windows...

Thanks,

Craig


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Re: Writing GIFs

2002-09-11 Thread Jacob S .

On Wed, 11 Sep 2002 10:55:37 -0700
Craig Dickson [EMAIL PROTECTED] wrote:

 I realize I am a terrible person for wanting to violate Unisys's
 patents, but I'm working on a web site that I think will often be
 visited by people with old browsers (it's the site for the elementary
 school my daughter attends), so rather than use PNGs, I think I'd be
 better off with GIFs. GIMP 1.2, even with the gimp-nonfree package,
 seems only to read GIFs, not write them. Does anyone know of a good,
 free-at-least-as-in-beer Linux program to translate PNGs and/or BMPs
 to compressed GIFs? If not, I guess I'll have to use Microsoft Photo
 Editor on Windows...
 
 Thanks,
 
 Craig

Actually, Gimp _does_ write .gifs. They just force you to type in the
file extension yourself, and then they'll prompt you for the .gif
options, including animation and all that. Works great on my Woody
machines around here (well, as good as something can when there's a
company like Unisys holding a patent on the technology :-).

HTH,
Jacob

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Re: Writing GIFs

2002-09-11 Thread martin f krafft

also sprach Craig Dickson [EMAIL PROTECTED] [2002.09.11.1955 +0200]:
 I realize I am a terrible person for wanting to violate Unisys's
 patents, but I'm working on a web site that I think will often be
 visited by people with old browsers (it's the site for the elementary
 school my daughter attends), so rather than use PNGs, I think I'd be
 better off with GIFs. GIMP 1.2, even with the gimp-nonfree package,
 seems only to read GIFs, not write them. Does anyone know of a good,
 free-at-least-as-in-beer Linux program to translate PNGs and/or BMPs to
 compressed GIFs? If not, I guess I'll have to use Microsoft Photo Editor
 on Windows...

use gimp to create file.png and then use imagemagick's convert:
  convert file.png file.gif

has the advantage that you get both, png and gif.

or has imagemagick's gif support been removed?

-- 
martin;  (greetings from the heart of the sun.)
  \ echo mailto: !#^.*|tr * mailto:; net@madduck
 
core error - bus dumped



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Re: Writing GIFs

2002-09-11 Thread Bob Proulx

Craig Dickson [EMAIL PROTECTED] [2002-09-11 10:55:37 -0700]:
 I realize I am a terrible person for wanting to violate Unisys's
 patents, but I'm working on a web site that I think will often be
 visited by people with old browsers (it's the site for the elementary
 school my daughter attends), so rather than use PNGs, I think I'd be
 better off with GIFs.

I have always prefered jpegs since they load faster.  I like that fact
that most browsers will show you the image as it downloads and
therefore it feels faster to me on slow connections.

Don't all browsers support .jpg format?  (I really don't know but had
always assumed so.)

Bob



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Re: Writing GIFs

2002-09-11 Thread Eric G. Miller

On Wed, Sep 11, 2002 at 09:16:02PM -0600, Bob Proulx wrote:
 Craig Dickson [EMAIL PROTECTED] [2002-09-11 10:55:37 -0700]:
  I realize I am a terrible person for wanting to violate Unisys's
  patents, but I'm working on a web site that I think will often be
  visited by people with old browsers (it's the site for the elementary
  school my daughter attends), so rather than use PNGs, I think I'd be
  better off with GIFs.
 
 I have always prefered jpegs since they load faster.  I like that fact
 that most browsers will show you the image as it downloads and
 therefore it feels faster to me on slow connections.

The JPEG encoding isn't very good for text and line art.  If you turn
compression on the JPEG to 0, it'll work but then the size would
likely be greater than a comparable GIF or PNG.

 Don't all browsers support .jpg format?  (I really don't know but had
 always assumed so.)

Last I checked, lynx and links don't ;-)  Remember those 
alt=BUY THIS NOW!!! attributes for our sight impaired folks as well.

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