Index: /plugins/pkImageConverterPlugin/trunk/lib/pkImageConverter.class.php
===================================================================
--- /plugins/pkImageConverterPlugin/trunk/lib/pkImageConverter.class.php (revision 15754)
+++ /plugins/pkImageConverterPlugin/trunk/lib/pkImageConverter.class.php (revision 16282)
@@ -99,4 +99,7 @@
   static public function scaleToNarrowerAxis($fileIn, $fileOut, $width, $height, $quality = 75)
   {
+    $width = ceil($width);
+    $height = ceil($height);
+    $quality = ceil($quality);
     list($iwidth, $iheight) = getimagesize($fileIn); 
     if (!$iwidth) {
@@ -116,4 +119,7 @@
     $width, $height, $quality = 75)
   {
+    $width = ceil($width);
+    $height = ceil($height);
+    $quality = ceil($quality);
     if ($width === false) {
       $scaleParameters = "-ysize " . ($height + 0);
@@ -129,4 +135,5 @@
     $quality = 75)
   {
+    $quality = ceil($quality);
     $scaleParameters = $factor + 0;  
     return self::scaleBody($fileIn, $fileOut, $scaleParameters, $quality);
@@ -136,4 +143,7 @@
     $quality = 75)
   {
+    $width = ceil($width);
+    $height = ceil($height);
+    $quality = ceil($quality);
     list($iwidth, $iheight) = getimagesize($fileIn); 
     if (!$iwidth) 
@@ -209,4 +219,5 @@
   static public function convertFormat($fileIn, $fileOut, $quality = 75)
   {
+    $quality = ceil($quality);
     return self::scaleBody($fileIn, $fileOut, false, $quality);
   }