getode

Responsive Image Switcher is a lightweight Gutenberg block that simplifies responsive image management in WordPress. Add the block, upload a desktop image (for screens ≥768px) and a mobile-optimized image (for screens <767px), and the plugin generates clean HTML5 <code><picture></code> markup. The browser automatically loads the appropriate image based on screen width, ensuring fast load times and an optimal user experience.
Key Features: 
– Device-Specific Images: Show different images on desktop (≥768px) and mobile (<767px) 
– Lightweight Solution: Uses standard HTML5 <code><picture></code> tags without extra JavaScript 
– Better Performance: Optimized for Core Web Vitals by reducing unnecessary image loading 
– SEO Friendly: Improves mobile user experience and page speed 
– Simple Interface: Easy-to-use block controls in the Gutenberg editor
Why Choose Responsive Image Switcher? 
With over 60% of web traffic coming from mobile devices, delivering the right image for each screen size is critical. This plugin eliminates the need for complex CSS media queries or CDN setups, making responsive images accessible to everyone.

Responsive Image Switcher

A lightweight block for responsive image switching between desktop and mobile.

Eirudo

Embed YouTube videos and keept their aspect ratio, just using simple shortcode.
<ul>
<li>Simple shortcode, can be used in the posts or widgets.</li>
<li>Using default YouTube Embed Code (iframe), but make it responsive</li>
<li>Custom aspect ratio, if you want set different porpotion size.</li>
<li>Auto centered position. So if you insert it on your post section, the video always on center-aligned.</li>
<li>Lazy Load supported.</li>
<li>100% Free! And no ads or even trackers inside.</li>
</ul>
<h3>Arbitrary section</h3>
<h3>A brief Markdown Example</h3>
Pros: 
1. Simple, only using shortcode to use for individual video each shortcode 
2. Lazy Load supported 
3. Custom parameters for advanced use
Cons: 
1. Only for simple use,not for advanced playlist. Embedding one video for each 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

Embed responsive YouTube videos using simple shortcode. Lazy Load supported.

Responsive Image Switcher vs Simple YouTube Responsive