cordova plugin add https://github.com/gitawego/cordova-screenshot.git

navigator.screenshot.save(function(error,res){
  if(error){
    console.error(error);
  }else{
    console.log('ok',res.filePath);
  }
});

navigator.screenshot.save(function(error,res){
  if(error){
    console.error(error);
  }else{
    console.log('ok',res.filePath);
  }
},'jpg',50);

navigator.screenshot.save(function(error,res){
  if(error){
    console.error(error);
  }else{
    console.log('ok',res.filePath); //should be path/to/myScreenshot.jpg
  }
},'jpg',50,'myScreenShot');

navigator.screenshot.URI(function(error,res){
  if(error){
    console.error(error);
  }else{
    html = '<img style="width:50%;" src="'+res.URI+'">';
    document.body.innerHTML = html;
  }
},50);

.service('$cordovaScreenshot', ['$q', function ($q){
	return {
		capture: function (filename, extension, quality){
			extension = extension || 'jpg';
			quality = quality || '100';

			var defer = $q.defer();
			
			navigator.screenshot.save(function (error, res){
				if (error) {
					console.error(error);
					defer.reject(error);
				} else {
					console.log('screenshot saved in: ', res.filePath);
					defer.resolve(res.filePath);
				}
			}, extension, quality, filename);
			
			return defer.promise;
		}
	};
}])