svg_poligon_to_path.js

//http://stackoverflow.com/questions/10717190/convert-svg-polygon-to-path
    //Open your SVG in a web browser.

    //Run this code:

    var polys = document.querySelectorAll('polygon,polyline');
    [].forEach.call(polys,convertPolyToPath);

    function convertPolyToPath(poly){
      var svgNS = poly.ownerSVGElement.namespaceURI;
      var path = document.createElementNS(svgNS,'path');
      var points = poly.getAttribute('points').split(/\s+|,/);
      var x0=points.shift(), y0=points.shift();
      var pathdata = 'M'+x0+','+y0+'L'+points.join(' ');
      if (poly.tagName=='polygon') pathdata+='z';
      path.setAttribute('d',pathdata);
      poly.parentNode.replaceChild(path,poly);
    }

    //Using the Developer Tools (or Firebug) of the browser, use "Copy as HTML" (or Copy SVG) on the element to get the modified source onto the clipboard.

    //Paste into a new file and enjoy.
    
    
    // rect to path 
    var polys = document.querySelectorAll('rect');
[].forEach.call(polys,convertPolyToPath);

function convertPolyToPath(poly){
  var svgNS = poly.ownerSVGElement.namespaceURI;
  var path = document.createElementNS(svgNS,'path');
  var x = poly.getAttribute('x');
  var y = poly.getAttribute('y');
  var w = poly.getAttribute('width');
  var h = poly.getAttribute('height');
  var pathdata = 'M'+x+','+y+' h'+w +'v'+h+' h'+ (-1 * w) +' z';
  path.setAttribute('d',pathdata);
  poly.parentNode.replaceChild(path,poly);
}