Lazy Load

Overview

Add lazyLoad to plugin setup:

lazyLoad: true

LazyLoad HTML structure requires class="owl-lazy" and data-src="url_to_img" or/and data-src-retina="url_to_highres_img". If you set above settings not on <img> but on other DOM element then Owl will load an image into css inline background style. You can even use picture tags with different sources by adding the owl-lazy class to the source tag and a data-srcset attribute.

Setup

$('.owl-carousel').owlCarousel({
    items:4,
    lazyLoad:true,
    loop:true,
    margin:10
});

Option

If you want to preload images you can also add the option lazyLoadEager to the settings object, where the value indicates how many items to the right (and left, when loop is true) will be pre-loaded.

HTML:

<div class="owl-carousel owl-theme">
    <img class="owl-lazy" data-src="https://placehold.it/350x450&text=1" data-src-retina="https://placehold.it/350x250&text=1-retina" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x650&text=2" data-src-retina="https://placehold.it/350x250&text=2-retina" alt="">
  <picture>
      <source class="owl-lazy" media="(min-width: 650px)" data-srcset="https://placehold.it/350x250&text=3-large">
      <source class="owl-lazy" media="(min-width: 350px)" data-srcset="https://placehold.it/350x250&text=3-medium">
      <img class="owl-lazy" data-src="https://placehold.it/350x250&text=3-fallback" alt="">
  </picture>
    <img class="owl-lazy" data-src="https://placehold.it/350x250&text=4" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x250&text=5" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x250&text=6" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x250&text=7" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x250&text=8" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x400&text=9" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x400&text=10" alt="">
    <img class="owl-lazy" data-src="https://placehold.it/350x450&text=11" alt="">
</div>