diff --git a/app/classes/BaseController.php b/app/classes/BaseController.php
index 6f75fa1..594c4fd 100644
--- a/app/classes/BaseController.php
+++ b/app/classes/BaseController.php
@@ -229,6 +229,38 @@ protected function _highlight($var, $format = "array", $label = false) {
 		return $string;
 	}
 	
+	/**
+	 * Export IndexSizes as string.
+	 *
+	 * @param mixed $var variable to be exported
+	 * @return string
+	 */
+		protected function _highlightIndexSizes($var) {
+			$string = "<table cellspacing='0' cellpadding='0' style='width:100%;border:0px solid #cccccc'>";
+			$c = 0;
+			foreach($var as $key => $value) {
+				if ($value < 1024) {
+					$formatted_size = $value . "b";
+				} else if ($value < 1024 * 1024) {
+					$formatted_size = round($value/1024, 2) . " kb";
+				} else if ($value < 1024 * 1024 * 1024) {
+					$formatted_size = round($value/1024/1024, 2) . " mb";
+				} else if ($value < 1024 * 1024 * 1024 * 1024) {
+					$formatted_size = round($value/1024/1024/1024, 2) . " gb";
+				}
+				if (($c%2) == 0) {
+					$bgc = "#fff";
+				} else {
+					$bgc = "#eee";
+				}
+				$string .= "<tr style='background-color: " . $bgc . "'><td style='border:1px solid #cccccc'>" . $key . "</td>";
+				$string .= "<td style='border:1px solid #cccccc' title='(" . $value . " bytes)'>" . $formatted_size . "</td></tr>";
+				$c++;
+			}
+			$string .= "</table>";
+			return $string;
+		}
+
 	/** 
 	 * format bytes to human size 
 	 * 
diff --git a/app/controllers/collection.php b/app/controllers/collection.php
index 3c454bd..33d59f6 100644
--- a/app/controllers/collection.php
+++ b/app/controllers/collection.php
@@ -785,7 +785,11 @@ public function doCollectionStats() {
 			$this->stats = $ret;
 			foreach ($this->stats as $index => $stat) {
 				if (is_array($stat)) {
-					$this->stats[$index] = $this->_highlight($stat, "json");
+					if ($index == "indexSizes") {
+						$this->stats[$index] = $this->_highlightIndexSizes($stat, "json");
+					} else {
+						$this->stats[$index] = $this->_highlight($stat);
+					}
 				}
 			}
 		}