kevin

This plugin enables WordPress to send HSTS header to browser
IMPORTANT NOTE: This plugin won’t work if you use any WordPress caching plugin. If this is the case, then update your .htaccess file to specify HSTS header.
HTTP Strict Transport Security (HSTS) is a web security policy mechanism that helps to protect websites against protocol downgrade attacks and cookie hijacking.
It allows web servers to declare that web browsers (or other complying user agents) should interact with it using only secure HTTPS connections, and never via the insecure HTTP protocol

Simple HSTS Preload

This plugin enables HSTS header on WordPress

Ebrahim Shafiei (EbraSha)

Abdal Security Headers is a powerful WordPress plugin that enhances your website’s security through HTTP security headers. It provides an easy-to-use interface for managing security policies and protecting against common web vulnerabilities.
Key Features:
<ul>
<li>Modern UI with iOS-style switches</li>
<li>Real-time CSP Header Preview</li>
<li>Automatic security header configuration</li>
<li>Protection against XSS attacks</li>
<li>Prevention of clickjacking attempts</li>
<li>MIME-type sniffing protection</li>
<li>Strict HTTPS enforcement</li>
<li>Full RTL support</li>
<li>Mobile-responsive interface</li>
</ul>
Security Headers Managed:
<ul>
<li>X-Frame-Options</li>
<li>X-XSS-Protection</li>
<li>X-Content-Type-Options</li>
<li>Strict-Transport-Security (HSTS)</li>
<li>Content-Security-Policy (CSP)</li>
<li>Referrer-Policy</li>
<li>Feature-Policy</li>
<li>Access-Control-Allow-Origin</li>
</ul>
<h3>Languages</h3>
This plugin is available in the following languages: 
– English (en_US) 
– Persian (fa_IR)
<h3>License</h3>
This plugin is released under the GPLv2 or later License. 
License details: <a href="http://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">http://www.gnu.org/licenses/gpl-2.0.html</a>

Abdal Security Headers

Enhance WordPress security with essential HTTP security headers, protecting against XSS, clickjacking, and other common web vulnerabilities.

Simple HSTS Preload vs Abdal Security Headers