diff --git a/views/bootstrap/class.DocumentVersionDetail.php b/views/bootstrap/class.DocumentVersionDetail.php
index 031ad5a8a..e3f496b81 100644
--- a/views/bootstrap/class.DocumentVersionDetail.php
+++ b/views/bootstrap/class.DocumentVersionDetail.php
@@ -235,7 +235,7 @@ class SeedDMS_View_DocumentVersionDetail extends SeedDMS_Bootstrap_Style {
 		print "<ul class=\"actions unstyled\">";
 		if ($file_exists){
 			print "<li><a href=\"../op/op.Download.php?documentid=".$document->getID()."&version=".$version->getVersion()."\" title=\"".htmlspecialchars($version->getMimeType())."\"><i class=\"icon-download\"></i> ".getMLText("download")."</a>";
-			if ($viewonlinefiletypes && in_array(strtolower($version->getFileType()), $viewonlinefiletypes))
+			if ($viewonlinefiletypes && (in_array(strtolower($version->getFileType()), $viewonlinefiletypes) || in_array(strtolower($version->getMimeType()), $viewonlinefiletypes)))
 				print "<li><a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$document->getID()."&version=".$version->getVersion()."\"><i class=\"icon-star\"></i> " . getMLText("view_online") . "</a>";
 			print "</ul>";
 			print "<ul class=\"actions unstyled\">";
@@ -401,7 +401,7 @@ class SeedDMS_View_DocumentVersionDetail extends SeedDMS_Bootstrap_Style {
 				print "<td>";
 				$previewer->createPreview($file, $previewwidthdetail);
 				if($file_exists) {
-					if ($viewonlinefiletypes && in_array(strtolower($file->getFileType()), $viewonlinefiletypes)) {
+					if ($viewonlinefiletypes && (in_array(strtolower($file->getFileType()), $viewonlinefiletypes) || in_array(strtolower($file->getMimeType()), $viewonlinefiletypes))) {
 						print "<a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&file=". $file->getID()."\">";
 					} else {
 						print "<a href=\"../op/op.Download.php?documentid=".$documentid."&file=".$file->getID()."\">";
@@ -434,7 +434,7 @@ class SeedDMS_View_DocumentVersionDetail extends SeedDMS_Bootstrap_Style {
 				print "<td><ul class=\"unstyled actions\">";
 				if ($file_exists) {
 					print "<li><a href=\"../op/op.Download.php?documentid=".$documentid."&file=".$file->getID()."\"><i class=\"icon-download\"></i>".getMLText('download')."</a></li>";
-					if ($viewonlinefiletypes && in_array(strtolower($file->getFileType()), $viewonlinefiletypes)) {
+					if ($viewonlinefiletypes && (in_array(strtolower($file->getFileType()), $viewonlinefiletypes) || in_array(strtolower($file->getMimeType()), $viewonlinefiletypes))) {
 						print "<li><a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&file=". $file->getID()."\"><i class=\"icon-star\"></i>" . getMLText("view_online") . "</a></li>";
 					}
 				} else print "<li><img class=\"mimeicon\" src=\"images/icons/".$this->getMimeIcon($file->getFileType())."\" title=\"".htmlspecialchars($file->getMimeType())."\">";
diff --git a/views/bootstrap/class.ViewDocument.php b/views/bootstrap/class.ViewDocument.php
index 2bbdfe836..e805823cf 100644
--- a/views/bootstrap/class.ViewDocument.php
+++ b/views/bootstrap/class.ViewDocument.php
@@ -566,7 +566,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 		$previewer->setConverters($previewconverters);
 		$previewer->createPreview($latestContent);
 		if ($file_exists) {
-			if ($viewonlinefiletypes && in_array(strtolower($latestContent->getFileType()), $viewonlinefiletypes)) {
+			if ($viewonlinefiletypes && (in_array(strtolower($latestContent->getFileType()), $viewonlinefiletypes) || in_array(strtolower($latestContent->getMimeType()), $viewonlinefiletypes))) {
 				print "<a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&version=". $latestContent->getVersion()."\">";
 			} else {
 				print "<a href=\"../op/op.Download.php?documentid=".$documentid."&version=".$latestContent->getVersion()."\">";
@@ -624,7 +624,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 		print "<ul class=\"unstyled actions\">";
 		if ($file_exists){
 			print "<li><a href=\"../op/op.Download.php?documentid=".$documentid."&version=".$latestContent->getVersion()."\"><i class=\"icon-download\"></i>".getMLText("download")."</a></li>";
-			if ($viewonlinefiletypes && in_array(strtolower($latestContent->getFileType()), $viewonlinefiletypes))
+			if ($viewonlinefiletypes && (in_array(strtolower($latestContent->getFileType()), $viewonlinefiletypes) || in_array(strtolower($latestContent->getMimeType()), $viewonlinefiletypes)))
 				print "<li><a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&version=". $latestContent->getVersion()."\"><i class=\"icon-star\"></i>" . getMLText("view_online") . "</a></li>";
 		}
 		print "</ul>";
@@ -1180,7 +1180,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 				print "<tr>\n";
 				print "<td nowrap>";
 				if($file_exists) {
-					if ($viewonlinefiletypes && in_array(strtolower($version->getFileType()), $viewonlinefiletypes)) {
+					if ($viewonlinefiletypes && (in_array(strtolower($version->getFileType()), $viewonlinefiletypes) || in_array(strtolower($version->getMimeType()), $viewonlinefiletypes))) {
 							print "<a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&version=".$version->getVersion()."\">";
 					} else {
 						print "<a href=\"../op/op.Download.php?documentid=".$documentid."&version=".$version->getVersion()."\">";
@@ -1225,7 +1225,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 				print "<ul class=\"actions unstyled\">";
 				if ($file_exists){
 					print "<li><a href=\"../op/op.Download.php?documentid=".$documentid."&version=".$version->getVersion()."\"><i class=\"icon-download\"></i>".getMLText("download")."</a>";
-					if ($viewonlinefiletypes && in_array(strtolower($version->getFileType()), $viewonlinefiletypes))
+					if ($viewonlinefiletypes && (in_array(strtolower($version->getFileType()), $viewonlinefiletypes) || in_array(strtolower($version->getMimeType()), $viewonlinefiletypes)))
 						print "<li><a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&version=".$version->getVersion()."\"><i class=\"icon-star\"></i>" . getMLText("view_online") . "</a>";
 					print "</ul>";
 					print "<ul class=\"actions unstyled\">";
@@ -1287,7 +1287,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 				print "<td>";
 				$previewer->createPreview($file, $previewwidthdetail);
 				if($file_exists) {
-					if ($viewonlinefiletypes && in_array(strtolower($file->getFileType()), $viewonlinefiletypes))
+					if ($viewonlinefiletypes && (in_array(strtolower($file->getFileType()), $viewonlinefiletypes) || in_array(strtolower($file->getMimeType()), $viewonlinefiletypes)))
 						print "<a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&file=". $file->getID()."\">";
 					else
 						print "<a href=\"../op/op.Download.php?documentid=".$documentid."&file=".$file->getID()."\">";
@@ -1322,7 +1322,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 				print "<td><ul class=\"unstyled actions\">";
 				if ($file_exists) {
 					print "<li><a href=\"../op/op.Download.php?documentid=".$documentid."&file=".$file->getID()."\"><i class=\"icon-download\"></i>".getMLText('download')."</a>";
-					if ($viewonlinefiletypes && in_array(strtolower($file->getFileType()), $viewonlinefiletypes))
+					if ($viewonlinefiletypes && (in_array(strtolower($file->getFileType()), $viewonlinefiletypes) || in_array(strtolower($file->getMimeType()), $viewonlinefiletypes)))
 						print "<li><a target=\"_blank\" href=\"../op/op.ViewOnline.php?documentid=".$documentid."&file=". $file->getID()."\"><i class=\"icon-star\"></i>" . getMLText("view_online") . "</a></li>";
 				}
 				echo "</ul><ul class=\"unstyled actions\">";