title: How to get screenshot of complete HTML page using HTML2Canvas
body: <p>I am using HTML2Canvas  to get image of complete HTML page .I am trying to save that image in PPT on a button click. 
    i am able to save image in PPT.
  But the saved image content is getting overlapped and the alert which i have used here is taking around 1 min to show .
  when i did debug i got to know that problem is with HTML2Canvas.
  i have used many third party charts in my page like Google charts.
  can you please suggest me any alternative for HTML2Canvas as i saw there are few limitations in HTML2Canvas when we use cross-origin content.  </p>
  
  <pre><code>$('#PPTExport').click(function(e) {
  
  
  var canvas = document.getElementById('canvas');
  var target = $('#loadImageHeader');
          html2canvas(target, {
          onrendered: function(canvas) {
  
          var data1 = canvas.toDataURL("image/jpeg").replace("image/jpeg", "image/octet-stream");
  
          alert(data1);
  
  
  
  
  $.ajax({ 
  url: "savechart", 
  data:{
  image1:data1
        }, 
  
  type: 'POST', 
  success: function (data) {
  if(data=="success")
  {
  
   $("#formid1" ).attr('action','savechartDownload');
   $( "#formid1" ).submit();
  }
                             } 
           });
  
  }
  });
                                                                      });
  </code></pre>