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Exporting palettized PNG-8 with alpha


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Hello,

 

I'm sorely missing the feature to export palettized PNG-8 with alpha from Affinity Designer for web development. I can export PNG-24 with alpha or PNG-8 with binary (on or off) transparency, but not PNG-8 using a palette in which the colors of the palette have alpha values attached. This is a feature that's supported by both the standalone tool ImageAlpha (converts PNG-24 to PNG-8 with alpha) and by Photoshop's Export dialog that you get by right-clicking layers.

 

I'm using PNG-8 with alpha for image size optimization, especially for spritesheets and graphics that would not quite work as SVG.

 

At the moment my workflow is: Export PNG-24, open each PNG in ImageAlpha, manually adjust the settings there, save.

I have to repeat this in parts every time I change a graphic, cancelling the benefits continuous export would provide me with.

 

Please add this feature

Cheers

-- Alina

 

ImageAlpha is using "pngquant and pngnq-s9 and alpha-channel-aware posterizer."

ImageAlpha: https://pngmini.com

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