Re: [Ziproxy-users] Re: Exclude Image file types possible?

[Will <ws...@99...>]

PNG's crashing Macintosh browsers is not ziproxy's fault, rather it is a bug
in Internet Explorer.  God only knows why this happens to Macintosh
computers because it seems to work fine on everything else.

Will


----- Original Message ----- 
From: "Juraj Variny" <va...@na...>
To: <zip...@li...>
Sent: Saturday, November 29, 2003 7:28 AM
Subject: [Ziproxy-users] Re: Exclude Image file types possible?



> Think about a typical .gif file; it's pretty small with the exception of
> animated gifs.  When you recompress a .gif file you don't generally gain a
> whole lot. Now think about how cruddy a page looks when the transparency
is
> removed.  You could argue that the site should use PNG files but PNG files
> can actually crash some browsers on Macintosh computers if they are over a
> certain size.   I found that out the hard way when I used png files for an
> logo and ended up converting them back to gifs in order to fix
> compatibility problems.
>  While you can barely tell (quality wise) when a
> jpeg is recompressed it is really noticeable when a .gif suddenly becomes
> fully solid and ruins the look of a page.

Sorry I've overlooked this. Crashing one's browser is a real problem and I
will look to your patch.

The best solution to second problem would be an JPEG2000 format. This is in
most cases not applicable, so only possibilities are:
a) GIF->PNG conversion only (may crash browser)
b) background color guessing (need to parse a HTML-> overkill)
c) nothing to do (but there are some huge GIFs, which may choke your
connection...)

Seems I will add an option to let people choose between normal, a) and c)
behaviors. Any idea what another possible option is there?

Juraj


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