diff --git a/CImage.php b/CImage.php
index 6c2c854..af97cad 100644
--- a/CImage.php
+++ b/CImage.php
@@ -1725,14 +1725,15 @@ class CImage
 
         $details['src']        = $this->imageSrc;
         $lastModified          = filemtime($this->pathToImage);
-        $details['src-gmdate'] = gmdate("D, d M Y H:i:s", $lastModified);
+        $details['srcGmdate'] = gmdate("D, d M Y H:i:s", $lastModified);
 
         $details['cache']        = basename($this->cacheFileName);
         $lastModified            = filemtime($this->cacheFileName);
-        $details['cache-gmdate'] = gmdate("D, d M Y H:i:s", $lastModified);
+        $details['cacheGmdate'] = gmdate("D, d M Y H:i:s", $lastModified);
 
         $details['width']  = $this->width;
         $details['height'] = $this->height;
+        $details['aspectRatio'] = round($this->width / $this->height, 3);
 
         return json_encode($details, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
     }
diff --git a/README.md b/README.md
index 84532cd..bd40628 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,8 @@ Revision history
 
 v0.5.x (latest)
 
+* Improving template for tests in `webroot/tests` when testing out #40.
+* Adding testcase for #40.
 * Adding option `convolve` taking comma-separated list of 11 float-values, wraps and exposes `imageconvoluttion()`. #4 
 * Adding option `dpr, device-pixel-ratio` which defaults to 1. Set to 2 to get a twice as large image. Useful for Retina displays. Basically a shortcut to enlarge the image.
 * Adding utility `cache.bash` to ease gathering stats on cache usage. #21
diff --git a/webroot/img/issue40/source.jpg b/webroot/img/issue40/source.jpg
new file mode 100644
index 0000000..42b9ea3
Binary files /dev/null and b/webroot/img/issue40/source.jpg differ
diff --git a/webroot/test/test_issue40.php b/webroot/test/test_issue40.php
new file mode 100644
index 0000000..75216c9
--- /dev/null
+++ b/webroot/test/test_issue40.php
@@ -0,0 +1,120 @@
+<!doctype html>
+<head>
+  <meta charset='utf-8'/>
+  <title>Testing img for issue 40 - no ratio</title>
+  <style>
+  body {background-color: #ccc;}
+  </style>
+  <script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
+
+<script type="text/javascript">
+window.getDetails = function (url, id) {
+  $.getJSON(url, function(data) {
+    element = document.getElementById(id);
+    element.innerHTML = "width: " + data.width + "\nheigh: " + data.height + "\naspect-ratio: " + data.aspectRatio;
+  });  
+}
+</script>
+
+</head>
+<body>
+<h1>Testing issue 40 - no ratio</h1>
+
+<?php
+error_reporting(-1);              // Report all type of errors
+ini_set('display_errors', 1);     // Display all errors 
+
+$imgphp = "../img.php?src=";
+
+$images = array(
+  'issue40/source.jpg',
+);
+
+
+$testcase = array(
+  '&nc&width=652&height=466',
+  '&nc&width=652&height=466&no-ratio',
+  '&nc&width=652&height=466&crop-to-fit',
+  '&nc&width=652&aspect-ratio=1.4',
+  '&nc&width=652&aspect-ratio=1.4&no-ratio',
+  '&nc&width=652&aspect-ratio=1.4&crop-to-fit',
+);
+?>
+
+
+<h2>Images used in test</h2>
+
+<p>The following images are used for this test.</p>
+
+<?php foreach($images as $image) : ?>
+  <p>
+    <code>
+      <a href="img/<?=$image?>"><?=$image?></a> 
+      <a href="<?=$imgphp . $image . '&json'?>">(json)</a>
+      <a href="<?=$imgphp . $image . '&verbose'?>">(verbose)</a>
+    </code>
+    <br>
+  <img src="<?=$imgphp . $image?>"></p>
+  <p></p>
+
+<pre id="<?=$image?>"></pre>
+<script type="text/javascript">window.getDetails("<?=$imgphp . $image . '&json'?>", "<?=$image?>")</script>
+
+<?php endforeach; ?>
+
+
+
+<h2>Testcases used for each image</h2>
+
+<p>The following testcases are used for each image.</p>
+
+<?php foreach($testcase as $tc) : ?>
+  <code><?=$tc?></code><br>
+<?php endforeach; ?>
+
+
+
+<h2>Applying testcase for each image</h2>
+
+<?php 
+$ch1 = 1;
+foreach($images as $image) :
+?>
+<h3><?=$ch1?>. Using source image <?=$image?></h3>
+
+<p>
+  <code>
+    <a href="img/<?=$image?>"><?=$image?></a> 
+    <a href="<?=$imgphp . $image . '&json'?>">(json)</a>
+    <a href="<?=$imgphp . $image . '&verbose'?>">(verbose)</a>
+  </code>
+  <br>
+  <img src="<?=$imgphp . $image?>">
+</p>
+
+<pre id="<?=$ch1?>"></pre>
+<script type="text/javascript">window.getDetails("<?=$imgphp . $image . '&json'?>", "<?=$ch1?>")</script>
+
+<?php 
+$ch2 = 1;
+foreach($testcase as $tc) : 
+$tcId = "$ch1.$ch2";
+?>
+<h4>Testcase <?=$tcId?>: <?=$tc?></h4>
+
+<p>
+  <code>
+    <a href="<?=$imgphp . $image . $tc?>"><?=$image . $tc?></a> 
+    <a href="<?=$imgphp . $image . $tc . '&json'?>">(json)</a>
+    <a href="<?=$imgphp . $image . $tc . '&verbose'?>">(verbose)</a>
+  </code>
+  <br>
+  <img src="<?=$imgphp . $image . $tc?>">
+</p>
+
+<pre id="<?=$tcId?>"></pre>
+<script type="text/javascript">window.getDetails("<?=$imgphp . $image . $tc . '&json'?>", "<?=$tcId?>")</script>
+
+<?php $ch2++; endforeach; ?>
+<?php $ch1++; endforeach; ?>
+
