slight difference in bkgrnd color

I saved my photoshop originals as .png(liked how everything looked) and added
content in fireworks. Out of fireworks I saved some of the slices as jpeg's and
some as gifs. There is a slight difference in the background color between some
of the slices. How do I fix this?
Thanks,
-Bill

Use GIFs only. You will never be able to match colors between GIF and JPG
because of the lossy compression in a JPG image.

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"growingfins" <webforumsuser (AT) macromedia (DOT) com> wrote

I saved my photoshop originals as .png(liked how everything looked) and
added
content in fireworks. Out of fireworks I saved some of the slices as
jpeg's and
some as gifs. There is a slight difference in the background color between
some
of the slices. How do I fix this?
Thanks,
-Bill

Murray *TMM* wrote:

Use GIFs only. You will never be able to match colors between GIF and JPG
because of the lossy compression in a JPG image.

"Never" is an exaggeration.
But it might be tricky occasionally, and you'll need some luck.

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I'll go with never.... 8)

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"Dan Vendel *GOF*" <see_my_signature_ (AT) _the_bottom_of_the_post (DOT) org> wrote in
message news:cer8e9$5tk$1 (AT) forums (DOT) macromedia.com...

Murray *TMM* wrote:
Use GIFs only. You will never be able to match colors between GIF and
JPG
because of the lossy compression in a JPG image.


"Never" is an exaggeration.
But it might be tricky occasionally, and you'll need some luck.

--
Dan Vendel - *GOF*
Contact: http://www.proformica.com/en/contact.shtml
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Murray *TMM* wrote:

I'll go with never.... 8)

OK; but it's not true.

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"Never" is an exaggeration.

Mathemetically speaking, probably not. JPGs average data and introduce
randomness to a file to compress it. The very nature of JPG shifts the
colors in an image.

You could get incredibly close...probably indiscernable to the eye/monitor,
but they'd probably still be slightly out of wack if you look at the bits
and bytes ;o)

-Darrel

It is often enough to make it the default, however....

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"Dan Vendel *GOF*" <see_my_signature_ (AT) _the_bottom_of_the_post (DOT) org> wrote in
message news:cera9l$5tk$2 (AT) forums (DOT) macromedia.com...

Murray *TMM* wrote:

I'll go with never.... 8)


OK; but it's not true.

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Bingo. My point exactly. Darrel also had a clear insight as well....

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"Michael Fesser" <netizen (AT) gmx (DOT) net> wrote

.oO(Dan Vendel *GOF*)

Murray *TMM* wrote:
Use GIFs only. You will never be able to match colors between GIF and
JPG
because of the lossy compression in a JPG image.

"Never" is an exaggeration.

OK, then you would have to adjust the background of the GIF/PNG to the
background of the compressed JPEG. And you would have to re-adjust it
after every change to the JPEG ...

Micha

darrel wrote:

"Never" is an exaggeration.


Mathemetically speaking, probably not. JPGs average data and introduce
randomness to a file to compress it. The very nature of JPG shifts the
colors in an image.

You could get incredibly close...probably indiscernable to the eye/monitor,
but they'd probably still be slightly out of wack if you look at the bits
and bytes ;o)

-Darrel

No, I have done this several times in PS.
I used a palette much larger than the actual image required and filled a
bottom layer (PS lingo) with correct hex color and added the image I
intended to use in a layer on top of that. Then flattened ad saved as
jpg and finally cropped the image pretty much but still a fair bit from
the actual motive. When enlarging the image to check the pixels (or
using the Digital Color Meter in the Mac's utility folder), I found a
few pixels with slightly off colors here and there - which I easily
changed. However, I admit I had to test several times occasionally.
Bottom line: It's a myth that it's impossible or even close to
impossible. But using gif instead will save a lot of work...

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.oO(Dan Vendel *GOF*)

Murray *TMM* wrote:
Use GIFs only. You will never be able to match colors between GIF and JPG
because of the lossy compression in a JPG image.

"Never" is an exaggeration.

OK, then you would have to adjust the background of the GIF/PNG to the
background of the compressed JPEG. And you would have to re-adjust it
after every change to the JPEG ...

Micha