Eirudo

A lightweight plugin to embed YouTube videos while keeping the correct aspect ratio — all with a simple shortcode.
<ul>
<li>Very simple shortcode. Use it in posts or widgets.</li>
<li>Uses the default YouTube iframe embed, but fully responsive.</li>
<li>Custom aspect ratio if you want a different video size.</li>
<li>Automatically centered, so your video always looks neat in your content.</li>
<li>Lazy load support to improve performance.</li>
<li>100% free — no ads, no trackers, no funny business.</li>
</ul>
<h3>Arbitrary section</h3>
<h3>A brief Markdown Example</h3>
Pros: 
1. Simple and lightweight — one shortcode per video 
2. Lazy load support 
3. Extra parameters available for advanced users
Cons: 
1. Designed for simple embeds only (no playlist support, one video per shortcode)

Simple YouTube Responsive

Perfect

You can add a line to your functions.php to make videos responsive if you're doing your own theme. However, if you're not, this plugin works beautifully and gives other options like lazy load, etc. 

If doing your own theme, add: add_theme_support( 'responsive-embeds' );

Works Beautifully

Easily embed responsive YouTube videos using a simple shortcode. Lazy load included.

Satish Thakor

ChapterPlay automatically extracts chapters from YouTube video descriptions and displays them in a beautiful, interactive sidebar. Visitors can click any chapter to jump directly to that timestamp.
<h4>Key Features</h4>
<ul>
<li>🎬 Gutenberg Block — drag and drop into any post or page</li>
<li>🔖 Shortcode — <code>[chapterplay url="..."]</code> for classic editor or any text widget</li>
<li>📑 Auto Chapter Extraction — reads timestamps directly from YouTube descriptions</li>
<li>📺 Multiple Players — add unlimited players on the same page with no conflicts</li>
<li>🌙 Premium Dark Design — polished UI that adapts to any container size (300px to full-width)</li>
<li>⚡ Smart Caching — chapter data is cached server-side to reduce API calls</li>
<li>🔑 No API Key Required — uses YouTube’s internal data endpoint; zero configuration needed</li>
</ul>
<h4>How to Use</h4>
Gutenberg Block: 
1. In the block editor, click + to add a new block 
2. Search for ChapterPlay 
3. Add the block, then paste the YouTube URL in the right-hand Settings panel 
4. Save and preview — the player renders on the frontend with chapters
Shortcode:
<pre><code>[chapterplay url="https://www.youtube.com/watch?v=VIDEO_ID"]

[chapterplay url="VIDEO_ID"]
</code></pre>
You can use the shortcode inside any page, post, or text widget.
<h4>External Services</h4>
This plugin connects to youtube.com to fetch video metadata (title, description, duration). No personal user data is transmitted. The connection is made server-side only when a video is first loaded or the cache expires.
<ul>
<li>Service: YouTube (google.com)</li>
<li>Data sent: YouTube video ID only</li>
<li>Data received: Video title, author, duration, description</li>
<li>Privacy policy: https://policies.google.com/privacy</li>
<li>Terms of service: https://www.youtube.com/t/terms</li>
</ul>

ChapterPlay Chapter Player for YouTube

Embed a premium YouTube chapter player anywhere using a Gutenberg block or shortcode. No API key needed.

Simple YouTube Responsive vs ChapterPlay Chapter Player for YouTube