The plugin provides the passage of Google Lighthouse tests on points:
- Preload key requests
- Ensure text remains visible during webfont load

Improves performance on test point:
- Elimination of resources that block rendering

How it works
Script optimization

Optimize loading custom.js file

Developer mode to update your Custom JS/CSS files

Inline or defer loading `theme.js` file

Move to the Footer and `defer` loading theme icons file

Move to the Footer theme analytics file

Move to the Footer theme newsletter file [J3 only]

Move OSM scripts to the footer [Joomla 3]
DNS-prefetch/preconnect for Google Analytics script
Optimize loading jQuery (remove/defer on head/footer)
Disable Mootools.js option [Joomla 3]
Disable/inline loading Joomla messages scripts [Joomla 4]
Option to defer loading Joomla core.min.js [Joomla 4]
Partial IE11 support to the theme
HTTP/2 preload uikit.min.js

 Style/CSS optimization

Disable/inline loading JCE columns CSS styles

Inline loading and minify to language switcher module styles

Disable loadind theme.update styles

Inline loading theme.css file into the page head [new]

Inline loading and minify of custom.css file (less than 15 kb) into the page head
Disable loading Joomla messages scripts [Joomla 4]
Disable/inline loading Joomla alert styles [Joomla 4]

    Remove comments from theme CSS files [new]

Image optimization

Adds `decode="async"` attribute for images

Auto preload for all logo images

Auto preload for boxed theme background image
Adjust the image quality using in-theme processing (jpg/webp/png/avif)

Adds the width and height attributes to the images (if they were specified in the element settings) Yootheme Pro 2.x only

    Option to disable Lazy loading (Yootheme Pro 3.x) [new]

Font optimization

Disable loading Font awesome [J4 only]
Clear theme fonts cache and adding `link preload` tags

Auto preload for custom fonts from the child theme (woff2/ttf/eot)

For font styles, adds font-display: swap; attribute

    Bot lawyer protection - removed the mention of using the Google font (fonts.googleapis.com) [new]


Requirements:

    Joomla 3.9.x/4.x
    Yootheme Pro 2.7.8+
    PHP 7.3+

How to use it:

    Install the plugin
    Open settings and apply needed options
    Go to theme settings and recompile theme styles (Yootheme > Style ⇒ Recompile LESS)