Prueba lazy load slick carousel

by Christian Unigarro

HTML

<link rel="stylesheet" href="//cdn.jsdelivr.net/jquery.slick/1.5.9/slick.css">
<script src="//cdn.jsdelivr.net/jquery.slick/1.5.9/slick.min.js"></script>
<div class="slick-slider">

    <div>
      <a
        target="_blank"
        href="http://www.elempleo.com/colombia/Files/BasesEmpresariales/3mcolombia/index.aspx">
        <img class="center-block"
        data-lazy="http://www.elempleo.com/colombia/Files/Companies/Logos/1520.gif"
        width="130"
        height="60"
        title="3M"
        alt=" Empleos 3M" />
        <p class="text-center">
          <small>
            <strong>3M</strong>
          </small>
        </p>
      </a>
    </div>

    <div>
      <a
        target="_blank"
        href="http://www.elempleo.com/colombia/Files/BasesEmpresariales/aia/index.aspx">
        <img class="center-block"
        data-lazy="http://www.elempleo.com/colombia/Files/Companies/Logos/6093.gif"
        width="130"
        height="60"
        title="AIA"
        alt=" Empleos AIA" />
        <p class="text-center">
          <small>
            <strong>AIA</strong>
          </small>
        </p>
      </a>
    </div>

    <div>
      <a
        target="_blank"
        href="http://www.elempleo.com/sitios-empresariales/colombia/ath/">
        <img class="center-block"
        data-lazy="http://www.elempleo.com/colombia/Files/Companies/Logos/1458.gif"
        width="130"
        height="60"
        title="ATH"
        alt=" Empleos ATH" />
        <p class="text-center">
          <small>
            <strong>ATH</strong>
          </small>
        </p>
      </a>
    </div>

    <div>
      <a
        target="_blank"
        href="http://www.elempleo.com/sitios-empresariales/colombia/accenture/">
        <img class="center-block"
        data-lazy="http://www.elempleo.com/colombia/Files/Companies/Logos/21087.gif"
        width="130"
        height="60"
        title="Accenture"
        alt=" Empleos Accenture" />
        <p class="text-center">
         ...

CSS

@charset 'UTF-8';
/* Slider */
.slick-loading .slick-list
{
    background: #fff url('./ajax-loader.gif') center center no-repeat;
}

/* Icons */
@font-face
{
    font-family: 'slick';
    font-weight: normal;
    font-style: normal;

    src: url('./fonts/slick.eot');
    src: url('./fonts/slick.eot?#iefix') format('embedded-opentype'), url('./fonts/slick.woff') format('woff'), url('./fonts/slick.ttf') format('truetype'), url('./fonts/slick.svg#slick') format('svg');
}
/* Arrows */
.slick-prev,
.slick-next
{
    font-size: 0;
    line-height: 0;

    position: absolute;
    top: 50%;

    display: block;

    width: 20px;
    height: 20px;
    padding: 0;
    margin-top: -10px\9; /*lte IE 8*/
    -webkit-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    transform: translate(0, -50%);

    cursor: pointer;

    color: transparent;
    border: none;
    outline: none;
    background: transparent;
}
.slick-prev:hover,
.slick-prev:focus,
.slick-next:hover,
.slick-next:focus
{
    color: transparent;
    outline: none;
    background: transparent;
}
.slick-prev:hover:before,
.slick-prev:focus:before,
.slick-next:hover:before,
.slick-next:focus:before
{
    opacity: 1;
}
.slick-prev.slick-disabled:before,
.slick-next.slick-disabled:before
{
    opacity: .25;
}

.slick-prev:before,
.slick-next:before
{
    font-family: 'slick';
    font-size: 20px;
    line-height: 1;

    opacity: .75;
    color: white;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.slick-prev
{
    left: -25px;
}
[dir='rtl'] .slick-prev
{
    right: -25px;
    left: auto;
}
.slick-prev:before
{
    content: '←';
}
[dir='rtl'] .slick-prev:before
{
    content: '→';
}

.slick-next
{
    right: -25px;
}
[dir='rtl'] .slick-next
{
    right: auto;
    left: -25px;
}
.slick-next:before
{
    content: '→';
}
[dir='rtl'] .slick-next:before
{
    content: '←';
}

/* Dots */
.slick-slider
{
    margin-bottom: 30px;
}

.slick-dots
{
    position:...

JavaScript

$('.slick-slider').slick({
  infinite: true,
  speed: 1000,
  slidesToShow: 7,
  slidesToScroll: 7,
  autoplay: true,
  autoplaySpeed: 2500,
  arrows: true,
  prevArrow: "<button type='button' class='slick-prev'></button>",
  nextArrow: "<button type='button' class='slick-next'></button>",
  lazyLoad: 'ondemand',
  responsive: [
    {
      breakpoint: 1200,
      settings: {
        slidesToShow: 5,
        slidesToScroll: 5
      }
    },
    {
      breakpoint: 992,
      settings: {
        slidesToShow: 4,
        slidesToScroll: 4
      }
    }
  ]
});