Quicksilver is a WordPress plugin which cleans up your website and optimizes it for better performance.
Quicksilver offers a comprehensive list of options for you to tweak and optimize your WordPress websites. These options are divided into the following categories:
- Disable Gutenberg (the block editor)
 - Disable REST API
 - Disable heartbeat
 - Disable XML-RPC
 - Disable emojis
 - Disable embeds, e.g. prevent others from embedding your site and vise-versa
 - Disable revisions
 - Disable self pings
 
- Remove query string for JavaScript and CSS files
 - Removes jQuery Migrate
 - Set scheme-less URLs for JavaScript and CSS files, e.g. remove 
http:andhttps:from URLs - Removes styles for recent comments widget
 
- Remove feed links
 - Remove RSD link
 - Remove wlwmanifest link
 - Remove adjacent posts links
 - Remove WordPress version number
 - Remove shortlink
 - Remove REST API link
 
- Show site icon on login page
 - Remove update nags
 - Remove footer text
 - Remove default dashboard widgets
 - Remove WordPress logo in the admin bar
 - Remove admin email confirmation
 
Quicksilver is created and maintained FREE on Github. Please open a new issue to add a suggestion or report a bug.