Older bugs which are supposed to be fixed in 0.84. *** Please try to reproduce your bug and confirm the bug fix. ***
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Mapaler
- Posts: 55
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by Mapaler »
XnView: MP 0.99.6 - 64 bit
OS: Windows 10- 64bit
Neither removing the alpha channel nor extracting the alpha channel is correct with this 8-bit index png.
111.png
↓This is the source image

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xnview
- Author of XnView
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by xnview »
this image file doesn't contain alpha channel but a transparent index that you can change in 'edit colormap'
Pierre.
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Mapaler
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by Mapaler »
xnview wrote: ↑Tue Jan 04, 2022 4:46 pm
this image file doesn't contain alpha channel but a transparent index that you can change in 'edit colormap'
But it can extract RGB channels.
Why not convert to a 32-bit image and then extract the Alpha channel ?
And I found 'edit colormap' does not establish a record of modifications and cannot be undone after reading the index file of other images.
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xnview
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by xnview »

Thanks to your detailed description I can reproduce
the problem.
Pierre.
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xnview
- Author of XnView
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by xnview »
This problem is supposed to be fixed in
XnView MP 0.99.7. Please check and confirm the bug fix here.
Pierre.