Converting 8 bit PNG to 32- bit with alpha

Question

I have an Image: PNG image data, 403 x 343, 8-bit colormap, non-interlaced. I want to convert this into Google Play Icon size: 32-bit with alpha.

How can I do it?

Cressy

Answer 1

Fixed it using https://pixlr.com/editor/. Just open and save the image with full quality.

Cressy

Not working. It saves it again with 8-bit colormap, non-interlaced. Any other solution? Need to publish app on playstore – Colporteur

It may work but do I really want flash to access my harddrive? – Thompson

Answer 2

With imagemagick: convert <file> png32:<newfilename>.png

With Gimp: open, add alpha channel (Layer > Transparency > Add alpha channel), set RGB mode (Image > Mode > RGB) and export as png.

Diglot

Worked just fine. – Iambus

After doing this with gimp 2.10.30 I see the .png file only has 16 bits per pixel, not 32. – Midkiff

Answer 3

Gimp -> export as -> png -> choose 16bpc RGBA

Thompson