BuilderOption Colour Reduction - Moon70/APNG-builder GitHub Wiki

When setting the maximum number of colours, a colour quantizer reduces the number of colours of all images to that value.

This is a lossy transformation.

Examples:

ApngBuilder builder = new ApngBuilder();
builder.setMaximumNumberOfColours(255);

new ApngBuilder().setMaximumNumberOfColours(255).buildPng(some-filearray, 500).savePng(new File("the-APNG-filepath"));

When setting to 255, the encoder will also change the image format from truecolour to a 256 colour palette image.