diff --git a/README.md b/README.md
index 212f374..144cf7c 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ Revision history
 
 v0.5.x (latest)
 
+* `webroot/check_system.php` now outputs version of PHP and GD.
 * #32 correctly send 404 header when serving an error message.
 * Trying to verify issue #29, but can not.
 * Adding structure for testprograms together with, use `webroot/test_issue29.php` as sample.
diff --git a/webroot/check_system.php b/webroot/check_system.php
index fca130e..0eed06f 100644
--- a/webroot/check_system.php
+++ b/webroot/check_system.php
@@ -1,4 +1,12 @@
 <?php
 
+echo 'Current PHP version: ' . phpversion() . '<br><br>';
+
+echo 'Running on: ' . $_SERVER['SERVER_SOFTWARE'] . '<br><br>';
+
 $no = extension_loaded('gd') ? null : 'NOT';
-echo "Extension gd is $no loaded.";
+echo "Extension gd is $no loaded.<br>";
+
+if (!$no) {
+    var_dump(gd_info());
+}