lazy-youtube-embed

A fast, lightweight, lazy load, progressive enhancement YouTube embed.

• NO DEPENDENCIES.
• Progressive enhancement: Uses the a tag instead div or custom element. Older or javascript disabled browsers can go to YouTube anyway.
• Lazy load: Load the video thumbnail using IntersectionObserver API.
• The quality of the thumbnail is decided using Network Information API.

Install

$ npm install --save lazy-youtube-embed

Then with a module bundler like rollup or webpack, use as you would anything else:

// Using ES6 module
import lazyYoutubeEmbed from 'lazy-youtube-embed'

Or via CDN with script tag

<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/logico/lazy-youtube-embed/dist/lazy-youtube-embed.css" />

<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/[email protected]/dist/lazy-youtube-embed.js" defer></script>

Usage

In HTML add an a tag with the source to the YouTube video and lazy-youtube-embed class:

<a href="https://youtu.be/3vBwRfQbXkg" class="lazy-youtube-embed">HOW TO FUNK IN TWO MINUTES</a>

lazy-youtube-embed must run after the DOM is loaded.

Comparison

These are test pages and results of performance. Faster to slower

1.- Lazy YouTube Embed.

LAZY-YOUTUBE-EMBED TEST PAGE

2.- Lite YouTube Embed repo.

LITE-YOUTUBE-EMBED TEST PAGE

3.- srcdoc technique css-tricks.

SRCDOC TEST PAGE

4.- AMP <amp-youtube> component amp-youtube.

AMP TEST PAGE

5.- <iframe> YouTube embed.

IFRAME TEST PAGE