Re: [Gimp-user] transparent background becomes black

2019-07-20 Thread Michael Schumacher
Am 17.07.19 um 04:25 schrieb DannyBones:

>> i wasted all day trying everything, and at least 10 tutorials, to fix
>> this error. transparent background saved in jpg or png becomes black.
>> i would really appreciate any help
>
> I think I know what's going on though I can't fix it. I'm having the same 
> issue,
> whenever I export to a JPG, it has aways exported correctly, when I opened the
> JPG, it has a white background. Today, I exported the same file, and and now 
> has
> the black background, which is no good. I went on another computer and 
> exported
> the same file and it works perfectly, white background. So I went and updated 
> to
> the newest version of Gimp, but no dice, it still has it back background. so
> something funny with the computer, or a Gimp glitch.  Maybe a complete 
> uninstall
> will help.

How many layers does the file have in GIMP when you export it, and what
is the background color selector (those two boxes blow the toolbox) set to?

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[Gimp-user] transparent background becomes black

2019-07-17 Thread rich404
>I think I know what's going on though I can't fix it. I'm having the
>same issue, whenever I export to a JPG, it has aways exported
>correctly, when I opened the JPG, it has a white background. Today, I
>exported the same file, and and now has the black background, which is
>no good. I went on another computer and exported the same file and it
>works perfectly, white background. So I went and updated to the newest
>version of Gimp, but no dice, it still has it back background. so
>something funny with the computer, or a Gimp glitch.  Maybe a complete
>uninstall will help.

I do not know why Windows users think that continually reinstalling solves a
problem.  Most probably a setting that is in the Gimp profile and the Gimp
profile is not removed / changed by a reinstall - up to you to fix that.

More than a best guess. Sometime in the past the FG / BG colours were swapped
The BG colour is now black. Gimp uses that colour to replace any transparency.

The default Gimp state of saving settings for the next session always causes
problems for unwary beginners. It can of course, be changed in Gimp preferences.

Attachments:
* https://www.gimpusers.com/system/attachments/1216/original/01-BG.jpg

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[Gimp-user] transparent background becomes black

2019-07-16 Thread DannyBones
>i wasted all day trying everything, and at least 10 tutorials, to fix
>this error. transparent background saved in jpg or png becomes black.
>i would really appreciate any help

I think I know what's going on though I can't fix it. I'm having the same issue,
whenever I export to a JPG, it has aways exported correctly, when I opened the
JPG, it has a white background. Today, I exported the same file, and and now has
the black background, which is no good. I went on another computer and exported
the same file and it works perfectly, white background. So I went and updated to
the newest version of Gimp, but no dice, it still has it back background. so
something funny with the computer, or a Gimp glitch.  Maybe a complete uninstall
will help.

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[Gimp-user] transparent background becomes black

2018-08-08 Thread rich404
>i wasted all day trying everything, and at least 10 tutorials, to fix
>this error. transparent background saved in jpg or png becomes black.
>i would really appreciate any help

You have your image in Gimp. Transparency is denoted (usually) by a chequer
board pattern. Export to a png file to keep the transparency. The default export
values are OK.

Then I suspect it is the viewer you are using to view the png.

Attached example, Firefox browser shows a white-ish background, then a couple of
linux viewers, one shows a black background, the other the chequer pattern. All
the same image.

Attachments:
* http://www.gimpusers.com/system/attachments/989/original/pngtransparency.jpg

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Re: [Gimp-user] transparent background becomes black

2018-08-06 Thread marty

On 08/06/2018 10:55 AM, Renate wrote:


i wasted all day trying everything, and at least 10 tutorials, to fix
this error. transparent background saved in jpg or png becomes black.
i would really appreciate any help

forgot to add i do add alpha channel
From gimp 2.8.22 I've successfully saved an alpha channel in a png 
image that shows the css background color through the image correctly 
when used as the src in an img tag in an html file.  Maybe your image is 
saving correctly but how your are viewing is supplying a black 
background which would be viewable through the alpha layer?

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Re: [Gimp-user] transparent background becomes black

2018-08-06 Thread Liam R E Quin
On Mon, 2018-08-06 at 16:54 +0200, Renate wrote:
> i wasted all day trying everything, and at least 10 tutorials, to fix
> this
> error. transparent background saved in jpg or png becomes black. i
> would really
> appreciate any help

First, only png supports transparency, not jpeg.

Second, "becomes black" where exactly? When you open the image again in
gimp?

Third, is there a transparent background before you expert, e.g. shown
with a checkerboard pattern?

slave ankh



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Click here to have the slave beaten.

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Re: [Gimp-user] transparent background becomes black

2018-08-06 Thread marty
JPG doesn't support an alpha channel so you are losing that in the 
export.  PNG should support it.  I'm interested in what others have to 
say about alpha channels not saving when exporting to PNG.  I try a few here


On 08/06/2018 10:55 AM, Renate wrote:

i wasted all day trying everything, and at least 10 tutorials, to fix
this error. transparent background saved in jpg or png becomes black.
i would really appreciate any help


forgot to add i do add alpha channel



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[Gimp-user] transparent background becomes black

2018-08-06 Thread Renate
>i wasted all day trying everything, and at least 10 tutorials, to fix
>this error. transparent background saved in jpg or png becomes black.
>i would really appreciate any help


forgot to add i do add alpha channel

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[Gimp-user] transparent background becomes black

2018-08-06 Thread Renate
i wasted all day trying everything, and at least 10 tutorials, to fix this
error. transparent background saved in jpg or png becomes black. i would really
appreciate any help

-- 
Renate (via www.gimpusers.com/forums)
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