WP Rocket - contribute to improving the page loading speed and reduce the load on the server. And the high download speed, in turn, reduces the bounce rate, increases conversion and helps to increase positions in Google search results. It has long been known that this factor is considered one of the most important in ranking.

Info:

 Features of WP Rocket:
Quick installation – I wouldn't say that this is an advantage, it is installed the same way as all other wordpress plugins in Russian.
Page caching is the ultra–fast loading time needed to improve search engine optimization and increase conversions.
Preloading the cache – indexing of the site is instantly improved.
Preloading the Sitemap – automatically works with the wordpress plugin yoast seo premium – is not a bad thing.
GZIP compression – saving bandwidth.
Browser caching – Static content no longer needs to be downloaded.
Database optimization – regular cleaning of garbage.
Google Fonts Optimization – font optimization.
Removing query strings from static resources – removing query strings from CSS and JS files.
LazyLoad – images are loaded only as the user scrolls down the page, thereby improving the page loading speed.
Minimization – reduction of CSS, HTML, jаvascript files – this means faster site loading time.
Postpone the JS download – again, reducing the loading time of the site.
Compatibility with Cloudeflare – I have already written about this service once. You can get acquainted with it in these articles: We put an SSL certificate for the wordpress site and an SSL certificate for the site. Part 2.
CDN – reduction of waiting for HTTP requests.
DNS prefetching is a shortening of DNS responses from external resources.
Mobile detection – the user's transition from the mobile version to a more convenient one for him.
Multilevel compatibility – well, this feature is for multi-sites.
E–commerce is useful for online stores on wordpress.
Multilingual compatibility – well, I would argue here. After the first installation of the plugin, it turned out that it was still necessary to translate it.
Connected users – permission to connect users.
Import Export – no comments – import/export of data.
Compatibility – clean code – convenient for the developer to use.
The white label – links to the wp rocket developer – can be deleted.