diff --git a/reference/image/functions/imageloadfont.xml b/reference/image/functions/imageloadfont.xml
index cb03b7514d..e36ee924df 100644
--- a/reference/image/functions/imageloadfont.xml
+++ b/reference/image/functions/imageloadfont.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.2 -->
   <refentry id="function.imageloadfont">
    <refnamediv>
@@ -75,6 +75,7 @@
       <programlisting role="php">
 <![CDATA[
 <?php
+header("Content-type: image/png");
 $im = imagecreatetruecolor(50, 20);
 $black = imagecolorallocate($im, 0, 0, 0);
 $white = imagecolorallocate($im, 255, 255, 255);
diff --git a/reference/image/functions/imagepsloadfont.xml b/reference/image/functions/imagepsloadfont.xml
index 73a4cb91cf..bc0e04ffb7 100644
--- a/reference/image/functions/imagepsloadfont.xml
+++ b/reference/image/functions/imagepsloadfont.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.7 -->
   <refentry id="function.imagepsloadfont">
    <refnamediv>
@@ -24,7 +24,7 @@
       <programlisting role="php">
 <![CDATA[
 <?php
-header("Content-type: image/jpeg");
+header("Content-type: image/png");
 $im = imagecreatetruecolor(350, 45);
 $black = imagecolorallocate($im, 0, 0, 0);
 $white = imagecolorallocate($im, 255, 255, 255);
@@ -32,7 +32,7 @@ imagefilledrectangle($im, 0, 0, 349, 44, $white);
 $font = imagepsloadfont("bchbi.pfb"); // or locate your .pfb files on your machine
 imagepstext($im, "Testing... It worked!", $font, 32, $white, $black, 32, 32);
 imagepsfreefont($font);
-imagejpeg($im, "", 100); //for best quality...your mileage may vary
+imagepng($im);
 imagedestroy($im);
 ?>
 ]]>
diff --git a/reference/image/functions/imagestring.xml b/reference/image/functions/imagestring.xml
index 4e73a4340d..f210c44441 100644
--- a/reference/image/functions/imagestring.xml
+++ b/reference/image/functions/imagestring.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.10 $ -->
+<!-- $Revision: 1.11 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.2 -->
   <refentry id="function.imagestring">
    <refnamediv>
@@ -42,8 +42,8 @@ $textcolor = imagecolorallocate($im, 0, 0, 255);
 imagestring($im, 5, 0, 0, "Hello world!", $textcolor);
 
 // output the image
-header("Content-type: image/jpeg");
-imagejpeg($im);
+header("Content-type: image/png");
+imagepng($im);
 ?>
 ]]>
       </programlisting>