Export folder of AI's to PNG (choose input/output folder)

ExportAIFoldertoPNGFolder.jsx

/**
* Illustrator script.
* Export folder of AI's to PNG (choose input/output folder)
*
*
* @author Jason Milkins - mentalaxis.com
*/

var folder = Folder.selectDialog('Select folder with illustrator files...');
var pngFolder = Folder.selectDialog('Select folder for png export...');

if (folder)
{
	var fileList = folder.getFiles();
	for (var i=0; i < fileList.length; i++)
	{
		if(fileList[i] instanceof File)
		{
			var file = fileList[i];
			var fname = file.name.toLowerCase();
			if(fname.indexOf('.ai') != -1)
			{
				app.open (file);
				var document = app.activeDocument;
				var options = new ExportOptionsPNG24();
				options.antiAliasing = true;
				options.transparency = true;
				options.artBoardClipping = true;
				var pngName = document.name.substring(0, document.name.indexOf(".ai"));
				var pngFile = new File(pngFolder.fsName+"/"+pngName+".png");
				document.exportFile (pngFile, ExportType.PNG24, options);
				document.close (SaveOptions.DONOTSAVECHANGES);
			}
		}
	}
}