On Nov 24, 2008, at 3:24 AM, Robert O'Rourke wrote:
If I remember rightly if you are able to save the image with a
transparent background it keeps the file size lower because a
transparent pixel takes less space than a pixel with colour
information. You can put a coloured outline around
While I cannot help with the spacing issue I do strongly suggest using
png rather than gif.
File size is smaller especially when run through pngGauntlet.
Mike Foskett
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of tee
Sent: 25 November 2008 10:48
To:
No, I may have to disagree. GIF files are (a majority of them, if not all,
are) smaller. They have to be. Considering GIF only supports up to a maximum
of 256 colors. (it is 8-bit). Try
http://www.sitepoint.com/article/gif-jpg-png-whats-difference/
---or---
Brett, i'm not sure if the previous recommendation of PNG was for the
8-bit pngs with transparency, but that's what I'd argue. I often check
between GIF and 8-bit PNG when i export, to see which looks the best
at the smallest size, and PNG often wins.
On Nov 25, 2008, at 8:15 AM, Brett
Sorry Brett, you're wrong.
The png format will handle three levels of bit-depth including 8-bit
which is the same as the gif format.
The references you state are somewhat outdated and don't consider the
different methods of compression that a png will handle natively.
I suggest you try a few
On Tue, Nov 25, 2008 at 9:06 AM, Foskett, Mike
[EMAIL PROTECTED] wrote:
Sorry Brett, you're wrong.
The png format will handle three levels of bit-depth including 8-bit which
is the same as the gif format.
The references you state are somewhat outdated and don't consider the
different
There is an issue where a PNG will not look exactly the same in IE vrs FF
So if you try to match a background with the PNG you may have issues
between the browsers
having said that I love PNGs myself
On Tue, Nov 25, 2008 at 9:06 AM, Foskett, Mike
[EMAIL PROTECTED] wrote:
Sorry Brett, you're
First of all, No I am not! Second I have tried out differences. Notice the
difference in file sizes. Thirdly, I did not say that png did not support
8-bit, nowhere does it say that, it does however say that GIF only supports
a maximum of 256 colors. Fourthly, Todd your argument is off subject,
wouldn't best practise for CSS sprites include image quality?
On Nov 25, 2008, at 11:23 AM, Brett Patterson wrote:
First of all, No I am not! Second I have tried out differences.
Notice the difference in file sizes. Thirdly, I did not say that png
did not support 8-bit, nowhere does it say
On Tue, Nov 25, 2008 at 11:23 AM, Brett Patterson
[EMAIL PROTECTED] wrote:
First of all, No I am not! Second I have tried out differences. Notice the
difference in file sizes. Thirdly, I did not say that png did not support
8-bit, nowhere does it say that, it does however say that GIF only
Please, could I ask you to take this discussion off-list if you
want to continue. It's really degenerated to an unresolvable cycle of
I'm right, No, I'M right... When it just comes down to Use the
best available solution for the problem at hand
All compressed image file formats have
[EMAIL PROTECTED] wrote:
There is an issue where a PNG will not look exactly the same in IE vrs FF
So if you try to match a background with the PNG you may have issues
between the browsers
That's easily resolved by stripping the gamma correction data from the
image using pngcrush.
Hi,
Im new here not sure whats going on but as far as web performance goes a
handy little online tool is http://www.smushit.com/ ( It goes beyond
Photoshop customisation)
Heather
_
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la
part de Andrew Maben
Envoyé : mardi
Sorry Mike I do not have an example at the moment - just remember past
headaches with it - apparently there is a solution
http://hsivonen.iki.fi/png-gamma/
per a previous email on this thread -
you can google the issue I'm sure
Neal
There is an issue where a PNG will not look exactly the same in
OK. So, lets agree that (Start here quoting you:::If you're not using a
decent compressor then png's are 15% - 20% oversized.:::end quoting you
here.) we are both right. I am simply stating as such without using a
compressor (Start quoting you:::If you're not using a decent compressor then
png's
Thanks Heather for the link. I have taken a quick glance at smushit.com, and it
looks promising.
Sent via BlackBerry from T-Mobile
-Original Message-
From: Heather [EMAIL PROTECTED]
Date: Tue, 25 Nov 2008 18:15:17
To: wsg@webstandardsgroup.org
Subject: RE: [WSG] your best practise for
Return Receipt
Your Re: [WSG] your best practise for CSS sprites for elements
document: that have no height declared
Gif Vs PNG
If using PNG 8 / GIF, with the same amount of colours. Say 256.
Gif are often smaller than PNG in small sizes, less than 20px by 20px
example. I'll have to find out at what point a PNG is lighter. I suspect
it's around 500px.
In all the other cases PNG images will be lighter.
tee wrote:
I am trying to optimize a site, though the file sizes of the overall
images aren't so much of a problem but the http requests. So I am
attempting to put 10 icons in one gif file, the individual icon size
is merely 600b and the dimension is 18px by 12px.
I made a 18px by 150px to
Check out
http://www.alistapart.com/articles/sprites
and
http://www.alistapart.com/articles/sprites2
I think this what your trying to achieve, or at least close to either
one of those articles.
I haven't played much with horizontal sprite images, but usually use
vertical ones, and I
If I remember rightly if you are able to save the image with a
transparent background it keeps the file size lower because a
transparent pixel takes less space than a pixel with colour
information.
It may be possible to get better compression on a file that contains
lots of pixels of the
Yes, and colors in a row or horizontal line, so to speak, compress better
depending on the compression mechanism. Just say that jpeg files
read/compress horizontal, and gif files read/compress vertical, not sure if
that is exactly correct, just an example. But iii (if the size is 1
pixel wide
I am trying to optimize a site, though the file sizes of the overall
images aren't so much of a problem but the http requests. So I am
attempting to put 10 icons in one gif file, the individual icon size
is merely 600b and the dimension is 18px by 12px.
I made a 18px by 150px to hold 10
I often have sprites that are 800px or even more, I usually use 100px in
between the images.
But I think there's a limit on earlier versions of Opera that dont take
images bigger than 2000px (not sure at all might be more). So I generally
use 2 or 3 sprites if they get big, I still save a lot of
24 matches
Mail list logo
