diff --git a/op/op.PdfPreview.php b/op/op.PdfPreview.php
new file mode 100644
index 000000000..48c85485f
--- /dev/null
+++ b/op/op.PdfPreview.php
@@ -0,0 +1,77 @@
+<?php
+//    MyDMS. Document Management System
+//    Copyright (C) 2002-2005  Markus Westphal
+//    Copyright (C) 2006-2008 Malcolm Cowe
+//    Copyright (C) 2010 Matteo Lucarelli
+//    Copyright (C) 2010-2016 Uwe Steinmann
+//
+//    This program is free software; you can redistribute it and/or modify
+//    it under the terms of the GNU General Public License as published by
+//    the Free Software Foundation; either version 2 of the License, or
+//    (at your option) any later version.
+//
+//    This program is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with this program; if not, write to the Free Software
+//    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+include("../inc/inc.Settings.php");
+include("../inc/inc.LogInit.php");
+include("../inc/inc.Utils.php");
+include("../inc/inc.Language.php");
+include("../inc/inc.Init.php");
+include("../inc/inc.Extension.php");
+include("../inc/inc.DBInit.php");
+include("../inc/inc.ClassUI.php");
+include("../inc/inc.Authentication.php");
+
+/**
+ * Include class to preview documents
+ */
+require_once("SeedDMS/Preview.php");
+
+$documentid = $_GET["documentid"];
+if (!isset($documentid) || !is_numeric($documentid) || intval($documentid)<1) {
+	exit;
+}
+
+$document = $dms->getDocument($documentid);
+if (!is_object($document)) {
+	exit;
+}
+
+if ($document->getAccessMode($user) < M_READ) {
+	exit;
+}
+
+if(isset($_GET['version'])) {
+	$version = $_GET["version"];
+	if (!is_numeric($version))
+		exit;
+	if(intval($version)<1)
+		$object = $document->getLatestContent();
+	else
+		$object = $document->getContentByVersion($version);
+} elseif(isset($_GET['file'])) {
+	$file = $_GET['file'];
+	if (!is_numeric($file) || intval($file)<1)
+		exit;
+	$object = $document->getDocumentFile($file);
+} else {
+	exit;
+}
+
+if (!is_object($object)) {
+	exit;
+}
+
+$previewer = new SeedDMS_Preview_PdfPreviewer($settings->_cacheDir);
+if(!$previewer->hasPreview($object))
+	$previewer->createPreview($object);
+header('Content-Type: application/pdf');
+$previewer->getPreview($object);
+