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White to Transparent does not work when saved

Jul 26, 2013, 11:45
Post: #1
White to Transparent does not work when saved
Run this simple test:

1. Open new gimp project. The background will be either the current foreground or background color. The point is it's ONE solid color.
2. Layer->Transparency->Add Alpha Channel
3. Edit->Clear The color is gone and it's a transparent layer. This is what I want to save.
4. File -> Save As (version 2.6)
5. Type in test.jpg
6. Open up test.jpg and you will see the transparent layer from step 3 has magically gone to white.

How do I prevent step 6 from happening?

And yes, same result on 2.8 (Windows)

Thanks!
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Jul 26, 2013, 11:55 (This post was last modified: Jul 26, 2013 11:56 by rich2005.)
Post: #2
RE: White to Transparent does not work when saved
(Jul 26, 2013 11:45)bbailey Wrote:  Run this simple test:
<snip>
And yes, same result on 2.8 (Windows)

You have just discovered all on your own that jpeg format does not support 'transparency'.

either: save in Gimp xcf format
or: export to png format.

A bit about it here http://gimpforums.com/thread-pros-and-co...ge-formats

** https://www.gimp-forum.net/ now answering questions**
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Jul 26, 2013, 12:16
Post: #3
RE: White to Transparent does not work when saved
lol.. it was a frustrating discovery. Thanks for pointing me onto the right path. png works as I want it to. The link was helpful, too. Thanks!

** Not sure how you mark this thread as [SOLVED] (I'm a newbie to this forum).
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