Here is the comparison results for the chosen plugins

Plugin nameSiteGround OptimizerW3 Total Cache
Version7.1.12.2.1
AuthorSiteGroundBoldGrid
Tested upto (WordPress Version)6.06.0
Required PHP Version7.05.6
Rating
5 star
380
4 star
17
3 star
21
2 star
18
1 star
49

Total reviews: 485(88%)

5 star
3697
4 star
566
3 star
154
2 star
91
1 star
476

Total reviews: 4984(88%)

Resolved issues74 out of 77
96.10%
92 out of 105
87.62%
Active installs

1000000+

1000000+

Screenshots
The SiteGround Optimizer Dashboard Page offers a quick look at the current optimization status of your website, along with shortcuts to the relevant optimization pages.The SiteGround Optimizer Caching Page handles your Dynamic caching and Memcached. Here, you can exclude URls from the cache, test your site and purge the Dynamic caching manually.The SiteGround Optimizer Environment Page, you can force HTTPS for your site, tweak the WordPress Heartbeat Optimization, pre-fetch external domains and enable the Database Maintenance.The SiteGround Optimizer Frontend Optimization Page allows you to Minify HTML, CSS & JS, as well as to remove query strings from your static resources and disable the Emoji support.The SiteGround Optimizer Media Page allows you to optimize your Media Library images, as well as adds Lazy Loading functionality for your site.The SiteGround Optimizer Speed Test Page, allows you to test your site loading speed, as well as additional tips on improving your site performance.
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