Errr ..... yes, yes. Have you read the documentation or looked at examples? Images are supported directly, and (unless you have indicated that PHPExcel only loads data) you should always download.
, PHPExcel, PHPExcel, . (Example)
$opendoc = $userDoc;
$objReader = new PHPExcel_Reader_Excel2007();
$objReader->setIncludeCharts(TRUE);
$objPHPExcel = $objReader->load($opendoc);
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'HTML');
$objw = $objWriter;
$objw->setIncludeCharts(TRUE);
$objw->writeAllSheets();
$objw->save('php://output');