これをオプションのリストに追加してみてください
opts.transparency = true
よし、ExportOptionsSave を試す
function SavePNG(saveFile)
{
var pngFile = new File(filePath);
opts = new PNGSaveOptions();
opts.format = SaveDocumentType.PNG;
opts.transparency = true
opts.PNGB = false;
opts.quality = 100;
opts.includeProfile = true;
activeDocument.saveAs(pngFile, opts, false, Extension.LOWERCASE);
}
私は通常、これらの行に沿って何かを使用します:
// call the source document
var srcDoc = app.activeDocument;
var fileName = app.activeDocument.name;
var docName = fileName.substring(0,fileName.length -4)
// Set filePath and fileName to source path
filePath = srcDoc.path + '/' + app.activeDocument.name + '.png';
// duplicate image into new document
// =======================================================
var id2784 = charIDToTypeID( "Mk " );
var desc707 = new ActionDescriptor();
var id2785 = charIDToTypeID( "null" );
var ref508 = new ActionReference();
var id2786 = charIDToTypeID( "Dcmn" );
ref508.putClass( id2786 );
desc707.putReference( id2785, ref508 );
var id2787 = charIDToTypeID( "Nm " );
desc707.putString( id2787, docName );
var id2788 = charIDToTypeID( "Usng" );
var ref509 = new ActionReference();
var id2789 = charIDToTypeID( "Lyr " );
var id2790 = charIDToTypeID( "Ordn" );
var id2791 = charIDToTypeID( "Trgt" );
ref509.putEnumerated( id2789, id2790, id2791 );
desc707.putReference( id2788, ref509 );
executeAction( id2784, desc707, DialogModes.NO );
// save out the image
var pngFile = new File(filePath);
pngSaveOptions = new PNGSaveOptions();
pngSaveOptions.embedColorProfile = true;
pngSaveOptions.formatOptions = FormatOptions.STANDARDBASELINE;
pngSaveOptions.matte = MatteType.NONE; pngSaveOptions.quality = 1;
activeDocument.saveAs(pngFile, pngSaveOptions, false, Extension.LOWERCASE);
// close that saved png
app.activeDocument.close()