Janos Moga

This plugin provides lightweight securtiy enhancements to secure your WordPress website. However, this is not a security plugin––most of securtiy enhancements should be made on server level.
Following security enhancements are available: 
* Setting up security headers. 
* Disabling XML-RPC
The plugin also includes functions to clean code output.
Following cleaning enhancements are available: 
* Removing WordPress default SVGs.

Hardened Clean

Lightweight protection to and cleaning of your Wordpress website.

Antonio D.

Daniil Zhitnitskii

With use of this plugin you will not longer need to care about clean state of your database because of plenty of revisions. Once the plugin is activated, every time you visit admin dashboard of a site it will automatically detect revisions, which are older then you need, and flush them from database.
Only works with multisite installation!
<h3>Disclaimers</h3>
The Simple Revision Cleaner plugin is supplied “as is” and all use is at your own risk.

Simple Revision Cleaner

This plugin provides simple handy tool for automatic cleaning database from old, non-relevant revisions on your web-site.

Hardened Clean vs Simple Revision Cleaner