diff --git a/test/Tests.txt b/test/Tests.txt
index e333787..fc14fef 100644
--- a/test/Tests.txt
+++ b/test/Tests.txt
@@ -1,3 +1,7 @@
 # Tests to be done
 
 Use resize fill-to-fit, crop-to-fit, stretch without width and height should result in image having original width and height.
+
+## Integration tests
+
+Checkout a version using composer and execute all tests, prefarably on cimage.se.
diff --git a/webroot/img/apple.jpg b/webroot/img/apple.jpg
new file mode 100644
index 0000000..efdf810
Binary files /dev/null and b/webroot/img/apple.jpg differ
diff --git a/webroot/img_config.php b/webroot/img_config.php
index 36066e2..ace5308 100644
--- a/webroot/img_config.php
+++ b/webroot/img_config.php
@@ -10,6 +10,15 @@ return [
     /**
      * Set mode as 'strict', 'production' or 'development'.
      *
+     * development: Development mode with verbose error reporting. Option
+     *              &verbose and &status enabled.
+     * production:  Production mode logs all errors to file, giving server
+     *              error 500 for bad usage. Option &verbose and &status
+     *              disabled.
+     * strict:      Strict mode logs few errors to file, giving server error
+     *              500 for bad usage. Stripped from comments and spaces.
+     *              Option &verbose and &status disabled.
+     *
      * Default values:
      *  mode: 'production'
      */
@@ -106,6 +115,20 @@ return [
 
 
 
+    /**
+     * Use backup image if src-image is not found on disk. The backup image
+     * is only available for local images and based on wether the original
+     * image is found on disk or not. The backup image must be a local image
+     * or the dummy image.
+     *
+     * Default value:
+     *  src_alt:  null //disabled by default
+     */
+     //'src_alt' => 'car.png',
+     //'src_alt' => 'dummy',
+
+
+
     /**
      * A regexp for validating characters in the image or alias filename.
      *
@@ -123,18 +146,20 @@ return [
       * when saving images.
       *
       * Default value:
-      *  jpg_quality:     null, integer between 0-100
-      *  png_compression: null, integer between 0-9
+      *  jpg_quality:     null, integer between 0-100, 
+      *                         default is 60
+      *  png_compression: null, integer between 0-9,
+      *                         default is -1 (PHP GD decides)
       */
-      //'jpg_quality'  => 75,
-      //'png_compression' => 1,
+      //'jpg_quality'  => 60,
+      //'png_compression' => -1,
 
 
 
       /**
-       * Convert the image to srgb before processing. Saves the converted
+       * Convert the image to sRGB before processing. Saves the converted
        * image in a cache subdir 'srgb'. This option is default false but can
-       * be changed to default true to do this conversion for all images.
+       * be changed to default true to always do conversion for all images.
        * This option requires PHP extension imagick and will silently fail
        * if that is not installed.
        *
@@ -273,7 +298,7 @@ return [
      *  jpeg_optimize_cmd: '/usr/local/bin/jpegtran -copy none -optimize'
      */
     /*
-    'postprocessing' => array(
+    'postprocessing' => [
         'png_filter'        => false,
         'png_filter_cmd'    => '/usr/local/bin/optipng -q',
 
@@ -282,7 +307,7 @@ return [
 
         'jpeg_optimize'     => false,
         'jpeg_optimize_cmd' => '/usr/local/bin/jpegtran -copy none -optimize',
-    ),
+    ],
     */
 
 
@@ -399,7 +424,7 @@ return [
 
 
     /**
-     * default options for ascii image.
+     * Default options for ascii image.
      *
      * Default values as specified below in the array.
      *  ascii-options:
diff --git a/webroot/js/cimage.js b/webroot/js/cimage.js
index e3f7d43..ed8a8c4 100644
--- a/webroot/js/cimage.js
+++ b/webroot/js/cimage.js
@@ -31,7 +31,7 @@ window.CImage = (function() {
             stack = document.getElementById("stack"),
             bg = document.getElementById("bg"),
             permalink = document.getElementById("permalink");
-
+            
         link  = "?";
         link += "input1=" + encodeURIComponent(input1.value) + "&";
         link += "input2=" + encodeURIComponent(input2.value) + "&";
@@ -59,9 +59,9 @@ window.CImage = (function() {
         button = document.getElementById("button" + id);
         area = document.getElementById("area" + id);
         deck = document.getElementById("deck" + id);
-
+        
         updatePermaLink();
-
+        
         if (this.value == "") {
             // Clear image if input is cleared
             button.setAttribute("disabled", "disabled");
@@ -75,7 +75,7 @@ window.CImage = (function() {
         area.classList.remove("hidden");
 
         $.getJSON(this.value + "&json", function(data) {
-            json.innerHTML = "filename: " + data.filename + "\ncolors: " + data.colors + "\nsize: " + data.size + "\nwidth: " + data.width + "\nheight: " + data.height + "\naspect-ratio: " + data.aspectRatio + "\npng-type: " + data.pngType;
+            json.innerHTML = "filename: " + data.filename + "\ncolors: " + data.colors + "\nsize: " + data.size + "\nwidth: " + data.width + "\nheigh: " + data.height + "\naspect-ratio: " + data.aspectRatio + "\npng-type: " + data.pngType;
         })
             .fail(function() {
                 json.innerHTML = "Details not available."
@@ -94,7 +94,7 @@ window.CImage = (function() {
     /**
      * Init the compare page with details.
      */
-    function compareInit(options)
+    function compareInit(options) 
     {
         var elements, id, onTop, myEvent,
             input1 = document.getElementById("input1"),
@@ -118,7 +118,7 @@ window.CImage = (function() {
         // Toggle json
         details.addEventListener("change", function() {
             var elements = document.querySelectorAll(".json");
-
+            
             forEach(elements, function (index, element) {
                 element.classList.toggle("hidden");
             });
@@ -128,7 +128,7 @@ window.CImage = (function() {
                 element.classList.toggle("hidden");
             }
             */
-
+            
             updatePermaLink();
             console.log("View JSON");
         });
@@ -215,7 +215,7 @@ window.CImage = (function() {
             element.addEventListener("click", function() {
                 var id = this.dataset.id,
                     area = document.getElementById("area" + id);
-
+                
                 area.classList.toggle("top");
                 onTop.classList.toggle("top");
                 onTop = area;
@@ -239,7 +239,7 @@ window.CImage = (function() {
         compareLoadImage.call(input6);
 
         console.log(options);
-    }
+    } 
 
 
     return {