Website Performance Analysis
Lazy Load Image JS
About Product
What is Lazy Loading?
Lazy loading is a technique that defers the loading of images until they are about to enter the viewport, reducing the initial load time and the amount of work the browser needs to do before presenting the page. This means images are only loaded when the user scrolls to them, rather than all at once when the page first loads.
By preventing images from initially loading, lazy loading significantly improves web page performance. It saves bandwidth, makes the page appear faster to users, and is particularly beneficial for those on mobile devices or with limited data plans. This approach ensures that only the necessary content is loaded, enhancing the overall user experience.
Additionally, lazy loading improves key performance metrics associated with Google Core Web Vitals, such as Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS). These metrics are crucial for user experience and search engine rankings, making lazy loading an effective strategy for better SEO and improved web performance.
Installation
For optimal performance, simply add this lightweight Vanilla JavaScript file at the end of the <body> tag or within the footer of your document. This placement ensures all HTML content loads correctly before the script executes, preventing potential rendering issues.
Usage
Simply add the class “lazy” to your image tags and replace the “src” attribute with “data-src“, like this:
<img class=”lazy” data-src=”image_src_here” alt=”Image alt text”>
What's Included
Upon purchase, you will receive a zip file containing:
- 132-lazy-load-image.js
Support
Visit our FAQs page for answers to common questions about our products and processes.
Still have questions or need support with your purchase? Feel free to contact us or email us directly at support@webmanics.com!
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