Re: [Gimp-user] [Gimp-developer] Proposed usabillity enhancement for PNG handling

[Tobias Jakobs]

On Wed, Oct 15, 2008 at 11:24 PM, Sven Neumann <[EMAIL PROTECTED]> wrote:
>>
>> My background color is as default white and i seldom change that
>> but all my png if converted to jpg get a black background
>
> Could you perhaps explain to us how exactly you convert a PNG to a JPEG?
>
I was able to reproduce the problem here, too. (Windows XP, Gimp
2.6.1) I created a new image with a transparent background painted
some red strokes on it an saved it as PNG. Then I closed and reopened
the image and saved it via File->Save As... (I just replaced the png
with jpeg). Before that I set the background colour to green and the
foreground colour to  blue. The result was an image with an black
background.

Regards,
Tobias
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Re: [Gimp-user] [Gimp-developer] Proposed usabillity enhancement for PNG handling

[Sven Neumann]

Hi,

On Tue, 2008-10-14 at 21:41 +, Alchemie foto\grafiche wrote:
> Sven Neumann wrote
> > That's not true. The current background color is used.
> > So if you want
> > the background to be white, then you should set your
> > background color to
> > white.
> 
> No. maybe "should" but does not for me
> 
> My background color is as default white and i seldom change that
> but all my png if converted to jpg get a black background

Could you perhaps explain to us how exactly you convert a PNG to a JPEG?


Sven


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Re: [Gimp-user] [Gimp-developer] Proposed usabillity enhancement for PNG handling

[Alchemie foto\grafiche]

 Sven Neumann wrote
> That's not true. The current background color is used.
> So if you want
> the background to be white, then you should set your
> background color to
> white.

No. maybe "should" but does not for me

My background color is as default white and i seldom change that
but all my png if converted to jpg get a black background

 and anyway if was that the reason the color will be not always black ,since 
there are millions of other possible BG colors

But result never change : png transparency become in jpg is always black , 
never yellow green or red,and more relevant  never white 

this at least on my gimp 2.6.1 with windows xp


--- Mar 14/10/08, Sven Neumann <[EMAIL PROTECTED]> ha scritto:

> Da: Sven Neumann <[EMAIL PROTECTED]>
> Oggetto: Re: [Gimp-developer] Proposed usabillity enhancement for PNG handling
> A: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]
> Data: Martedì 14 ottobre 2008, 20:00
> Hi,
> 
> On Tue, 2008-10-14 at 15:24 +, Alchemie
> foto\grafiche wrote:
> 
> > When a PNG created with gimp is converted in JPG or
> any other format
> > that do not support trnsparency transparent area
> become black, while
> > they should be white
> > 
> > that happens if the conversion is done with gimp OR
> any other SW .
> 
> That's not true. The current background color is used.
> So if you want
> the background to be white, then you should set your
> background color to
> white.
> 
> 
> Sven

My background color is as default white and i seldom change that
but all my png if converted get a black background



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