"Toni" <Toni@nowhere.com> wrote in message
news:%23nJssFhxKHA.6140@TK2MSFTNGP05.phx.gbl...
> I've been searching, but can't find a good answer. What are the
requirements for the
> favicon.ico icon for Internet Explorer across OS and browser versions?
>
> Microsoft states that it should include 16x16 and 32x32:
>
http://msdn.microsoft.com/en-us/library/ms537656(VS.85).aspx#Create_the_Correct_Size_Icon
>
> Can anyone tell me about resolution support - 4bit or 8bit - across WinXP,
Vista, Win7
> etc?
> "Don Varnau" <don_04[at]varnau[dot]org> wrote...
> > Hi,
> > I have a folder of saved Favicons.
> > The Favicon file for McAfee contains 9 icons:
> >
> > Three sizes:
> > 16x16
> > 32x32
> > 48x48
> >
> > Each of these sizes comes in
> > 16 colors
> > 256 colors
> > True colors
> >
> > Other icons in that folder are 32x32 or 16x16 (only McAfee has so many
> > sizes)
> > Color depth ranges from 16 color to True color, with no apparent rhyme
or
> > reason.
> > Some very basic icons which obviously only contain a few colors were
created
> > in true color.
> >
> > These icons all look the same in IE6 (when they display) IE7, IE8 or
> > Firefox.
> > Size seems to be important- color depth doesn't. 
"Toni" <Toni@nowhere.com> wrote in message
news:uMmkIOjxKHA.5036@TK2MSFTNGP02.phx.gbl...
> When you write size is important (yuk yuk!), I know 16x16 shows in IE,
does 32x32 show
> in IE?
>
> And it seems that if I set to 256 colors, that is fine for all?
>
> (.ico files can contain icons of different size & color depth in the same
file. I have a
> complex color icon that I'm trying to reduce the file size of).
Hi,
Considering how small the icon will be, even if used on the desktop, I can't
see the value of true colors/24-bit.
The McAfee favicon (9 versions) is 25 kb- others run from 1 kb- 8 kb. A
16x16 icon will look bad if enlarged for use on the desktop. If you're
concerned with file size, I'd try a 16x16 and a 32x32, both 256 colors.
Check those icons out on different monitors/resolutions- see if there's a
problem.
Don
