$mime_types= array( “xls” =>’application/vnd.ms-excel’, “xlsx” =>’application/vnd.openxmlformats-officedocument.spreadsheetml.sheet’, “xml” =>’text/xml’, “ods”=>’application/vnd.oasis.opendocument.spreadsheet’, “csv”=>’text/plain’, “tmpl”=>’text/plain’, “pdf”=> ‘application/pdf’, “php”=>’application/x-httpd-php’, “jpg”=>’image/jpeg’, “png”=>’image/png’, “gif”=>’image/gif’, “bmp”=>’image/bmp’, “txt”=>’text/plain’, “doc”=>’application/msword’, “js”=>’text/js’, “swf”=>’application/x-shockwave-flash’, “mp3″=>’audio/mpeg’, “zip”=>’application/zip’, “rar”=>’application/rar’, “tar”=>’application/tar’, “arj”=>’application/arj’, “cab”=>’application/cab’, “html”=>’text/html’, “htm”=>’text/html’, “default”=>’application/octet-stream’, “folder”=>’application/vnd.google-apps.folder’ ); In addition, here is a list of mime-types specifically pertaining to Google drive (and the google suite): https://developers.google.com/drive/v3/web/mime-types