Google rolled out the new "Speed" report within the Google Search Console to confirm that the speed factor is more and more important for the ranking of a website.
The Google PageSpeed score assigned to your pages is now crucial, a score of 90 or above is considered fast, and 50 to 90 is considered moderate. Below 50 is considered to be slow.

JSpeed increases performance of your website by applying automatically several improvements as suggested by Google PageSpeed best practices. By installing the plugin you can reach up to a doubled score during the Google PageSpeed and GTMetrix test.

JSpeed is the most powerful Joomla performance plugin that implements unique technologies such as Adaptive Contents™ that makes it possible to generate a lightweight version of the website to dramatically raise up the page speed score without losing website functionalities.

JSpeed functionalities include:
•Scripts minification: Javascript can be minified to reduce the total scripts size and save bandwidth

•Stylesheets minification: CSS can be minified to reduce the total CSS size, save bandwidth and extract the 'Above-the-fold' CSS

•HTML minification: The HTML source code can be minified to reduce the total page size and save bandwidth

•Combine multiple JS and CSS files: Javascript and CSS can be combined in single files to minimize the HTTP request overhead

•Adaptive Contents™: This technology makes it possible to generate a lightweight version of the website to raise up the page speed score up to the max value also for mobile without losing website functionalities

•Instant Page technology™: Instant Page uses just-in-time preloading. This feature, compatible with both desktop and mobile devices, preloads a page right before a user clicks on it

•Auto configuration and integrated Google PageSpeed™: The plugin is capable to find the optimal configuration automatically and integrates the Google PageSpeed test

•Defer and preload of assets: CSS, JS and Web Fonts can be loaded in defer, async or preload mode

•Lazy-load images: Images and iframes that are out of view can be lazy-loaded only when the user scrolls down the page to display them

•Lazy-load HTML elements: Heavy HTML parts that slow down the LCP can be easily lazy-loaded

•Images optimization: Large images can be rescaled, resized and optimized on the fly to dramatically reduce the page size and bandwidth

•Optimization of background images: JSpeed is capable to optimize also images that are set as a background through HTML and CSS styles

•Lossless optimization: Large images in PNG and JPG format can be optimized on the fly using a lossless algorithm

•Srcset creation for images: JSpeed is capable to automatically create an image srcset using up to 4 differently-sized images for various resolutions

•Images conversion to WebP and AVIF: Images can be converted in realtime to the WebP and AVIF next generation format

•Speculative Loading API: enables the dynamic prefetching or prerendering of specific URLs and assets before the user navigates to or views them

•Assets removal: It's possible to remove CSS/JS files and Fonts to avoid the loading of unnecessary resources

•Htaccess optimization: A series of optimizations can be applied to the htaccess file in order to leverage the browser caching

•Combine images: It's possible to generate a single container image for multiple backgrounds applied through CSS

•HTTP/2 optimizations: JSpeed works with HTTP/2 compatible servers to enable server push

•CDN support: Links for all assets can be automatically rewritten to point to your CDN domain

•Fix conflicts easily: JSpeed integrates a powerful exclusions system to fix conflicts due to minification of scripts

Product features to increase the score in Google PageSpeed:

-Scripts and CSS minification: Javascript and CSS files can be minified to reduce the total scripts size and save bandwidth

-HTML minification: The HTML source code of each page can be minified to reduce the total page size and speed up the loading time

-Combine assets: Javascript, CSS and images can be combined in single files to minimize the HTTP request overhead

-Adaptive Contents™: Generate a lightweight version of the website to raise up the score

-Instant Page technology™: This feature preloads a page right before a user clicks on it thanks to just-in-time preloading

-Exclusions system: JSpeed integrates a powerful exclusions system to fix conflicts and issues due to minification and optimizations

-CDN rewriting: If you own a CDN links for all assets can be automatically rewritten to point to your CDN domain

-Images optimization: Large images can be rescaled, resized and optimized on the fly to dramatically reduce the total page size and bandwidth usage

-Lazy-load assets: Scripts, CSS, images, iframes and HTML elements can be lazy-loaded only when really needed to avoid render blocking resources and improve the LCP

-Total cache usage: JSpeed makes intensive use of the cache for all kinds of assets to load them very quickly

-HTTP/2 support: JSpeed works with HTTP/2 compatible servers to leverage preload of assets by the browser

-Htaccess optimizations: JSpeed is able to apply optimizations to the htaccess file in order to leverage the browser caching