Photoshop script that exports all groups to individual png files. Credits to http://www.damienvanholten.com/blog/export-groups-to-files-photoshop/

ps-export-groups-to-files.jsx

#target photoshop
function main(){
if(!documents.length) return;
var doc = activeDocument;
var oldPath = activeDocument.path;
for(var a=0;a<doc .layerSets.length;a++){
activeDocument.activeLayer = activeDocument.layers.getByName(doc.layerSets[a].name);
dupLayers();
activeDocument.mergeVisibleLayers();
activeDocument.trim(TrimType.TRANSPARENT,true,true,true,true);
var saveFile= File(oldPath +"/"+doc.layerSets[a].name +".png");
SavePNG(saveFile);
app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);
    }
}
main();
function dupLayers() { 
    var desc143 = new ActionDescriptor();
        var ref73 = new ActionReference();
        ref73.putClass( charIDToTypeID('Dcmn') );
    desc143.putReference( charIDToTypeID('null'), ref73 );
    desc143.putString( charIDToTypeID('Nm  '), activeDocument.activeLayer.name );
        var ref74 = new ActionReference();
        ref74.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
    desc143.putReference( charIDToTypeID('Usng'), ref74 );
    executeAction( charIDToTypeID('Mk  '), desc143, DialogModes.NO );
};
function SavePNG(saveFile){
var pngOpts = new ExportOptionsSaveForWeb; 
pngOpts.format = SaveDocumentType.PNG
pngOpts.PNG8 = false; 
pngOpts.transparency = true; 
pngOpts.interlaced = false; 
pngOpts.quality = 100;
activeDocument.exportDocument(new File(saveFile),ExportType.SAVEFORWEB,pngOpts); 
}