: Bmp alpha channel issues SlavaSoft Paint Express is an image editor that I try to use for re-shaping one of my Android app's assets. It takes in a .png file, auto-convertit to .bmp (it can't
SlavaSoft Paint Express is an image editor that I try to use for re-shaping one of my Android app's assets. It takes in a .png file, auto-convertit to .bmp (it can't work with PNG format), I do the reshaping, then save the .bmp file. Re-opening the file in SlavaSoft reveals the image file exactly how I have saved it, however, opening the same file in Photoshop, ABitmapEditor or attempting to convert it to .png via zamzar.com all produce the same erroneous output - they do not show the alpha channel.
Tried using the reshaped asset inside my Android app and the same - no alpha channel. What is going on here ? how come SlavaSoft sees the alpha channel while other tools do not ?
Thank you
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Pixelformer support BMP with alpha channel (with premultiply).
You can also use Photoshop but it's harder & you must set the alpha channel manually (draw alpha channel to black/255 manually).
I don't think that BMP supports transparency natively; I have certainly never seen it used.
It may be that your app is using proprietary (or perhaps just obscure) extensions to BMP, which the other apps do not understand.
Paint Express doesn't read PNG alpha data. It seems like a very primitive editor, not sure why you're using it instead of Photoshop.
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