wpszaki

If you are embedding Youtube video(s) into your site then you will need this plugin. As you may (or may not) know the default Youtube embed code is not responsive and in order to load the player itself your browser has to download more than 1MB of data from Youtube’s servers. That is way too much and this is the reason why we made this plugin. A video player has to be lightweight and responsive. Period.
This plugin is replacing the default Youtube player with the video’s high quality thumbnail and a play button. The real player and the video won’t load until you click on the play button or the thumbnail itself. With this easy trick you will have a much lighter and faster website and the thumbnail + the actual player will be responsive too.
Our plugin is only 60KB without any extra library or unnecessary function.
If you are speed-optimizing your site or if you want to reduce the loading times of your pages then you are at the right place.
<h3>This plugin will:</h3>
<ul>
<li>Make all of the embedded Youtube videos responsive automatically</li>
<li>Will reduce the size of your pages (where you have embedded videos)</li>
<li>Will make your site faster</li>
<li>Will improve the user experience</li>
</ul>
<h3>You can also:</h3>
<ul>
<li>
Manually insert a different thumbnail for each embedded video with the ‘thumb_url’ parameter.
[youtube_embed url=”video_url” thumb-url=”custom_thumb_url”]
</li>
<li>
Manually set a different width for each video with the ‘width’ parameter.
[youtube_embed url=”video_url” width=”50″]
</li>
<li>
Manually align each video to left, right or center with the ‘align’ parameter.
[youtube_embed url=”video_url” align=”center”]
</li>
<li>
Disable the related videos
</li>
<li>Disable the video controls</li>
<li>Disable the fullscreen option</li>
<li>Align the videos globally or individually</li>
<li>Set the custom video width for all videos or to just a single video with a shortcode parameter</li>
</ul>
<h3>Comparison</h3>
Here’s a quick comparison with the built-in TwentySeventeen theme (without any other plugin).
We placed a default Youtube video embed code in a new and empty page, ran the tests and then replaced it with our solution before running the tests again.
Total page size with the traditional Youtube embed code: 2.18MB 
Total page size with our lightweight & responsive embedder: 472KB
Page load time with the traditional Youtube embed code: 5.33s 
Page load time with our lightweight & responsive embedder: 2.52s

Lightweight and Responsive Youtube Embed

Make your embedded Youtube videos responsive & lightweight with this plugin. Reduce the loading time of your site and increase the user experience …

Felix Arntz

This plugin takes a no-frills approach to smooth scrolling, providing a fast, performant, and accessible user experience.
Simply enable the plugin, and any anchor links (i.e. links that point to other content on the same page) will provide a smooth scrolling experience rather than abruptly jumping to the destination content.
The plugin relies on the latest smooth scrolling techniques using CSS. A very fast and lightweight JavaScript polyfill (<1KB) is included to equally support older browsers, including Internet Explorer. So you can rest assured this plugin covers your userbase.
<h4>Why does this plugin exist?</h4>

Smooth scrolling is a basic feature to enhance user experience, so it shouldn’t come at a performance cost that at the same time harms user experience elsewhere.
Several other smooth scrolling solutions unfortunately rely on outdated techniques such as jQuery, which can hurt your site’s performance, and is really not necessary to provide the feature. Even browsers as old as 10 years don’t need jQuery to achieve smooth scrolling. In fact, as of today you can achieve the behavior with only CSS, not even requiring any JavaScript.
Another potential reason to use this plugin over other smooth scrolling solutions is accessibility: This plugin respects the user preferences around reduced motion, which can avoid discomfort for those with <a href="https://www.a11yproject.com/posts/understanding-vestibular-disorders/" rel="nofollow ugc">vestibular motion disorders</a>.
You may already use a smooth scrolling plugin, but it is worth double checking that it doesn’t use one of those outdated, inefficient, and inaccessible approaches that may slow down your site or affect user interactions negatively.
<h4>More technical details</h4>
This plugin simply enables smooth scrolling with the <code>scroll-behavior</code> CSS property. This property has been supported by all modern browsers for a few years now.
To support older browsers as well, a lightweight JavaScript polyfill is included, which is only loaded for browsers that lack support for the CSS property and doesn’t require any dependencies. The polyfill uses latest JavaScript user experience best practices such as <code>requestAnimationFrame</code> to provide a smooth scrolling experience without potentially blocking other user interactions.
For relevant browser support, see: 
* <a href="https://caniuse.com/css-scroll-behavior" rel="nofollow ugc">CSS Scroll-behavior</a> 
* <a href="https://caniuse.com/mdn-css_properties_scroll-padding-top" rel="nofollow ugc">CSS property: scroll-padding-top</a> 
* <a href="https://caniuse.com/prefers-reduced-motion" rel="nofollow ugc">prefers-reduced-motion media query</a> 
* <a href="https://caniuse.com/requestanimationframe" rel="nofollow ugc">requestAnimationFrame</a> 
* <a href="https://caniuse.com/high-resolution-time" rel="nofollow ugc">High Resolution Time API</a> 
* <a href="https://caniuse.com/mdn-api_nodelist" rel="nofollow ugc">NodeList API</a> 
* <a href="https://caniuse.com/mdn-api_window_scrollto" rel="nofollow ugc">Window API: scrollTo</a>

Fast Smooth Scroll

This lightweight plugin enhances user experience by enabling smooth scrolling for anchor links without the need for jQuery or other dependencies.

Lightweight and Responsive Youtube Embed vs Fast Smooth Scroll