carlosbranco

My WP Fast is the plugin that will make your WordPress super fast. 
With this plugin is possible to: 
Minimize JS files and Merge 
Minimize CSS files and Merge 
Minimize HTML to make your site load faster 
Automatic lazy load all images on your website 
Configure a CDN to make your website even faster 
Remove WordPress information that your website doesn\’t need
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/in7Y2WN77gw?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

My WP Fast

Make your Wordpress website super fast by minimizing and merging your JS and CSS files. This plugin have CDN option, lazy load and much more.

sevenspark

The new accessibility javascript in the Appearance > Menus panel in WordPress 3.6 can significantly slow the page load speed when using a large number of menu items (> 50). This plugin defers the accessibility processing to eliminate the scripting bottleneck and allow the Appearance > Menus screen to run much faster and more responsively.
<a href="http://sevenspark.com/wordpress/speeding-up-the-appearance-menus-screen-in-wordpress-3-6" rel="nofollow ugc">Full details</a>
This solution is fairly rough. Hopefully we can develop a robust solution that can eventually become part of the core. Pull requests through GitHub are welcome.

My WP Fast vs Faster Appearance – Menus