How to open image by click on slider

If you want to open current slider image URL in new window, you just need to add custom script in your website:

jQuery(function ($) {
  $('.nk-slider').on('click', function () {
    var url = $('.nk-slider-current-slide').css('background-image');
    url = url ? url.replace('url(','').replace(')','').replace(/\"/gi, '') : false;
    if (url) {
      window.open(url);
    }
  });
});