title: Eliminate margins while rendering a pdf with phantomJS
body: <p>I am using PhantomJS to render an html web page with D3 charts to a PDF report.The report looks near perfect after I made some changes to rasterize.js. However, no matter what I change, I've not been able to eliminate the left and right margins completely.Could someone suggest any modifications to raterize.js to remove these margins altogether. My changes to the file are as below:-</p>
  
  <pre><code>page.viewportSize = { width: 595, height: 842 };   //**A4**
      if (system.args.length &gt; 3 &amp;&amp; system.args[2].substr(-4) === ".pdf") {
      size = system.args[3].split('*');
      page.paperSize = size.length === 2 ? { width: size[0], height: size[1], margin: '-150px' }
                                         : { format: system.args[3], orientation: 'portrait', margin: '-4cm' }; //**Swapnil:- added a negative margin to utilize the entire width of the canvas. (Reduces the margins but does not eliminate them completely)**
  } else if (system.args.length &gt; 3 &amp;&amp; system.args[3].substr(-2) === "px") {
      size = system.args[3].split('*');
      if (size.length === 2) {
          pageWidth = parseInt(size[0], 10);
          pageHeight = parseInt(size[1], 10);
          page.viewportSize = { width: pageWidth, height: pageHeight };
          page.clipRect = { top: 0, left: 0, width: pageWidth, height: pageHeight };
      } else {
          console.log("size:", system.args[3]);
          pageWidth = parseInt(system.args[3], 10);
          pageHeight = parseInt(pageWidth * 3/4, 10); // it's as good an assumption as any
          console.log ("pageHeight:",pageHeight);
          page.viewportSize = { width: pageWidth, height: pageHeight };
      }
  }
  if (system.args.length &gt; 4) {
      page.zoomFactor = system.args[4];
  }
  page.open(address, function (status) {
      if (status !== 'success') {
          console.log('Unable to load the address!');
          phantom.exit(1);
      } else {
          window.setTimeout(function () {
              page.render(output);
              phantom.exit();
          }, 20000);  // **Swapnil:- increased time out to ensure all the charts load perfectly**
      }
  });
  </code></pre>
  
  <p>Thanks!</p>