What are some effective image lazy loading techniques?

What are some effective image lazy loading techniques?

Lazy loading is a technique that delays the loading of images until they are needed. Some effective methods include using the 'loading' attribute in HTML, implementing Intersection Observer API, and using JavaScript libraries like LazyLoad.

Can you explain how the Intersection Observer API works?

Sure! The Intersection Observer API allows you to asynchronously observe changes in the intersection of a target element with an ancestor element or with a top-level document's viewport. This is useful for lazy loading images as it lets you know when an image is about to enter the viewport.

What are the benefits of using lazy loading?

The benefits include improved page load times, reduced initial data usage, and better performance on mobile devices, leading to a better user experience.

Are there any drawbacks to lazy loading?

Yes, potential drawbacks include SEO concerns if not implemented correctly, and it may cause a delay in image visibility, which can affect user experience if not managed properly.