Photoshop Script: Save an extra png on Document Save

photoshop-script-save-extra-png-on-save.jsx

main(); 

function main(){ 
    var Name = app.activeDocument.name.replace(/\.[^\.]+$/, ''); 
    var Ext = decodeURI(app.activeDocument.name).replace(/^.*\./,''); 
    if(Ext.toLowerCase() != 'psd') return; 
    var Path = app.activeDocument.path; 
    var saveFile = File(Path + "/" + Name +".png"); 
    if(saveFile.exists) saveFile.remove(); 
    SavePNG(saveFile); 
}

function SavePNG(saveFile){ 
    var pngSaveOptions = new PNGSaveOptions(); 
    activeDocument.saveAs(saveFile, pngSaveOptions, true, Extension.LOWERCASE); 
}