I'm currently trying to lower the size of my project. While checking the image folder after exporting for Android via Crosswalk, I discovered that all my JPEG images, that I carefully compressed in order to be good-looking but not too heavy, are now PNG images. And obviously, they are now around 500Kb each, while they were less to 100Kb beforehand...
These are large, 100% opacity sprites, so I don't need PNG format for them. Is there any way that I could avoid C2 to turn them to the PNG format?
I put the option "PNG compression" to none, but it still makes (uncompressed) PNG with all of my files. :-/
And I have a sub-question : What does exactly the "Brute (very slow)" option under PNG compression in the export window? I tried it, and unlike what I expected, the image folder is still heavier with this option checked.