diff --git a/CHANGELOG b/CHANGELOG
index ba3b0bef1..225e1d076 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -11,6 +11,8 @@
 - use table for list of caches
 - propper error msgs when saving extension configuration
 - creating backup archives has been removed
+- add javascript table sorter
+- use table sorter on clear cache page and conversion services page
 
 --------------------------------------------------------------------------------
                      Changes in version 5.1.42
diff --git a/views/bootstrap/class.ClearCache.php b/views/bootstrap/class.ClearCache.php
index 577ff62b7..cf373f504 100644
--- a/views/bootstrap/class.ClearCache.php
+++ b/views/bootstrap/class.ClearCache.php
@@ -13,11 +13,6 @@
  * @version    Release: @package_version@
  */
 
-/**
- * Include parent class
- */
-//require_once("class.Bootstrap.php");
-
 /**
  * Class which outputs the html page for ClearCache view
  *
@@ -31,11 +26,18 @@
  */
 class SeedDMS_View_ClearCache extends SeedDMS_Theme_Style {
 
+	function js() { /* {{{ */
+		header('Content-Type: application/javascript; charset=UTF-8');
+?>
+		new Tablesort(document.getElementById('clearcachetable'));
+<?php
+	} /* }}} */
+
 	protected function output($name, $title, $space, $c) {
 		echo '<tr><td><input type="checkbox" name="'.$name.'" value="1" checked></td>';
 		echo '<td>'.$title.'</td>';
-		echo '<td>'.($space !== NULL ? SeedDMS_Core_File::format_filesize($space) : '').'</td>';
-		echo '<td>'.($c !== NULL ? $c : '').'</td>';
+		echo '<td data-sort="'.((int) $space).'">'.($space !== NULL ? SeedDMS_Core_File::format_filesize($space) : '').'</td>';
+		echo '<td data-sort="'.((int) $c).'">'.($c !== NULL ? $c : '').'</td>';
 		echo '</tr>';
 	}
 
@@ -44,6 +46,9 @@ class SeedDMS_View_ClearCache extends SeedDMS_Theme_Style {
 		$user = $this->params['user'];
 		$cachedir = $this->params['cachedir'];
 
+		$this->htmlAddHeader('<script type="text/javascript" src="../views/'.$this->theme.'/vendors/tablesort/tablesort.min.js"></script>'."\n", 'js');
+		$this->htmlAddHeader('<script type="text/javascript" src="../views/'.$this->theme.'/vendors/tablesort/sorts/tablesort.number.min.js"></script>'."\n", 'js');
+
 		$this->htmlStartPage(getMLText("admin_tools"));
 		$this->globalNavigation();
 		$this->contentStart();
@@ -53,9 +58,9 @@ class SeedDMS_View_ClearCache extends SeedDMS_Theme_Style {
 ?>
 <form action="../op/op.ClearCache.php" name="form1" method="post">
 <?php echo createHiddenFieldWithKey('clearcache'); ?>
-<table class="table table-sm table-condensed table-hover">
+<table id="clearcachetable" class="table table-sm table-condensed table-hover">
 <thead>
-<tr><th></th><th>Cache</th><th>Size</th><th>Files</th></tr>
+<tr><th data-sort-method="none"></th><th data-sort-method="none">Cache</th><th>Size</th><th>Files</th></tr>
 </thead>
 <tbody>
 <?php
diff --git a/views/bootstrap/class.ConversionServices.php b/views/bootstrap/class.ConversionServices.php
index 31fd7f9bf..eb131d7d1 100644
--- a/views/bootstrap/class.ConversionServices.php
+++ b/views/bootstrap/class.ConversionServices.php
@@ -22,14 +22,21 @@
  */
 class SeedDMS_View_ConversionServices extends SeedDMS_Theme_Style {
 
+	function js() { /* {{{ */
+		header('Content-Type: application/javascript; charset=UTF-8');
+?>
+		new Tablesort(document.getElementById('servicetable'));
+<?php
+	} /* }}} */
+
 	/**
 	 * List all registered conversion services
 	 *
 	 */
 	function list_conversion_services($allservices) { /* {{{ */
-		echo "<table class=\"table table-condensed table-sm\">\n";
+		echo "<table id=\"servicetable\" class=\"table table-condensed table-sm\">\n";
 		echo "<thead>";
-		echo "<tr><th>".getMLText('service_list_from')."</th><th>".getMLText('service_list_to')."</th><th>".getMLText('class_name')."</th><th>".getMLText('service_list_info')."</th></tr>\n";
+		echo "<tr><th>".getMLText('service_list_from')."</th><th>".getMLText('service_list_to')."</th><th>".getMLText('class_name')."</th><th data-sort-method=\"none\">".getMLText('service_list_info')."</th></tr>\n";
 		echo "</thead>";
 		echo "<tbody>";
 		foreach($allservices as $from=>$tos) {
@@ -48,6 +55,9 @@ class SeedDMS_View_ConversionServices extends SeedDMS_Theme_Style {
 		$user = $this->params['user'];
 		$conversionmgr = $this->params['conversionmgr'];
 
+		$this->htmlAddHeader('<script type="text/javascript" src="../views/'.$this->theme.'/vendors/tablesort/tablesort.min.js"></script>'."\n", 'js');
+		$this->htmlAddHeader('<script type="text/javascript" src="../views/'.$this->theme.'/vendors/tablesort/sorts/tablesort.number.min.js"></script>'."\n", 'js');
+
 		$this->htmlStartPage(getMLText("admin_tools"));
 		$this->globalNavigation();
 		$this->contentStart();
@@ -57,7 +67,7 @@ class SeedDMS_View_ConversionServices extends SeedDMS_Theme_Style {
 			$allservices = $conversionmgr->getServices();
 			if($data = $dms->getStatisticalData('docspermimetype')) {
 				$this->contentHeading(getMLText("list_conversion_overview"));
-				echo "<table class=\"table table-condensed table-sm\">\n";
+				echo "<table id=\"mimetypetable\" class=\"table table-condensed table-sm\">\n";
 				echo "<thead>";
 				echo "<tr><th>".getMLText('mimetype')."</th><th>".getMLText('preview')."</th><th>".getMLText('fullsearch')."</th><th>".getMLText('preview_pdf')."</th></tr>\n";
 				echo "</thead>";