diff --git a/lib/phantomscript.js b/lib/phantomscript.js
index 2f3a6513f..20a750ce4 100644
--- a/lib/phantomscript.js
+++ b/lib/phantomscript.js
@@ -210,6 +210,9 @@ function executeInPage(data) {
     , elContent
     , svg
     , svgValue
+    , boundingBox
+    , width
+    , height
 
   toRemove = document.getElementsByClassName('mermaid')
   if (toRemove && toRemove.length) {
@@ -255,27 +258,29 @@ function executeInPage(data) {
 
   svg = document.querySelector('svg')
 
-  var boundingBox = svg.getBoundingClientRect(); // the initial bonding box of the svg
+  boundingBox = svg.getBoundingClientRect(); // the initial bonding box of the svg
+  width = boundingBox.width * 1.5; // adding the scale factor for consistency with output in chrome browser
+  height = boundingBox.height * 1.5; // adding the scale factor for consistency with output in chrome browser
 
   // resizing the body to fit the svg
   document.body.setAttribute(
     'style'
-    , 'width: ' + (boundingBox.width * 1.5) + '; height: ' + (boundingBox.height * 1.5) + ';'
+    , 'width: ' + width + '; height: ' + height + ';'
   )
   // resizing the svg via css for consistent display
   svg.setAttribute(
     'style'
-    , 'width: ' + (boundingBox.width * 1.5) + '; height: ' + (boundingBox.height * 1.5) + ';'
+    , 'width: ' + width + '; height: ' + height + ';'
   )
 
   // set witdth and height attributes used to set the viewport when rending png image
   svg.setAttribute(
     'width'
-    , boundingBox.width *  1.5
+    , width
   )
   svg.setAttribute(
     'height'
-    , boundingBox.height * 1.5  
+    , height
   )
 
   svgValue = xmlSerializer.serializeToString(svg)