A simple function which removes all styles from text pasted from Word or Browsers.

textAngular: modifyHtml

// created for use in textAngulars ta-paste="modifyHtml($html)" option
// http://textangular.com/

$scope.modifyHtml = function($html){
  var DOMTree = jQuery(jQuery.parseHTML($html, null, false));
  jQuery.each(DOMTree, function(key, value){
    jQuery(value).removeAttr('style').find('*').removeAttr('style').removeClass();
  });
  return jQuery('<div>').append(DOMTree).html();
};