CODEWITHSUNDEEP
pythonpngpython-imaging-library
c0dehunter
c0dehunter

Reputation: 6150

Save image as RGBA8 in PNG

I am trying to save an image in PNG and would like to preserve transparency and optimize for size. 64 colors are enough.

I think I already had the solution with Python's Pillow, but have lost it. Here is the result I'm looking for (RGBA PNG with 64 colors):

enter image description here

I'm trying with this:

tile_opt = tile.convert("RGB").convert("P", palette=Image.ADAPTIVE, colors=64)
tile_opt.save(currenttiles_path + "/" + fname, "PNG", optimize=True)

But I am loosing alpha with convert("RGB"). If I try convert("RGBA") then Python says image is not in right format.

How can I do this?

Upvotes: 2

Views: 941

Answers (1)

c0dehunter
c0dehunter

Reputation: 6150

I solved this using pngquant (website).

I still have to figure out how to use the module within Python but was able to get proper result by invoking the following command from Python with os.system():

pngquant ---output final.png 64 original.png

Upvotes: 1

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