SEO · December 17, 2023

SEO Tip - Implement lazy loading for images and videos

SEO Tip - Implement Lazy Loading for Images and Videos

As a website owner, you are always looking for ways to improve your site's performance and user experience. One way to achieve this is by implementing lazy loading for images and videos. Lazy loading is a technique that defers the loading of non-critical resources until they are needed, which can significantly improve page load times and reduce server load.

What is Lazy Loading?

Lazy loading is a technique that delays the loading of images and videos until they are in the user's viewport. This means that instead of loading all the images and videos on a page at once, they are loaded as the user scrolls down the page. This can greatly improve page load times, especially for pages with a lot of media content.

Benefits of Lazy Loading

  • Improved page load times: By only loading images and videos when they are needed, you can reduce the initial load time of your page.
  • Reduced server load: Lazy loading can also reduce the load on your server, as it only needs to serve the images and videos that are actually being viewed by the user.
  • Better user experience: Users are more likely to stay on a page that loads quickly, and lazy loading can help achieve this.

How to Implement Lazy Loading

There are several ways to implement lazy loading on your website. One popular method is to use a JavaScript library such as lazysizes or lozad.js. These libraries provide an easy way to add lazy loading to your site with just a few lines of code.

Another option is to use the loading attribute, which is a native HTML feature that allows you to specify that an image or video should be lazy loaded. This attribute is supported by most modern browsers, and can be used by simply adding loading="lazy" to your img or video tags.

Examples of Lazy Loading

Here is an example of how to use the loading attribute to lazy load an image:


<img src="image.jpg" alt="Example Image" loading="lazy">

And here is an example of how to use the lazysizes library to lazy load an image:


<img data-src="image.jpg" alt="Example Image" class="lazyload">

In both cases, the image will only be loaded when it is in the user's viewport, which can greatly improve page load times.

Conclusion

Lazy loading is a powerful technique that can help improve the performance and user experience of your website. By only loading images and videos when they are needed, you can reduce page load times and server load, and provide a better experience for your users. Whether you use a JavaScript library or the native loading attribute, implementing lazy loading is a simple and effective way to optimize your site.

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