StampyCode

This plugin addresses the need for a simple way to add HTTP headers to outbound HTTP responses in your site.
These headers can include custom ones specific to your application, or can be security related. Some you may wish to specify to protect your site may include:
<ul>
<li>Public-Key-Pins</li>
<li>Strict-Transport-Security</li>
<li>X-Frame-Options</li>
<li>X-XSS-Protection</li>
<li>X-Content-Type-Options</li>
<li>Content-Security-Policy</li>
<li>Content-Security-Policy-Report-Only</li>
</ul>
<h3>Related Links</h3>
<ul>
<li><a href="http://www.troyhunt.com/2015/09/introducing-you-to-browser-security.html" rel="nofollow ugc">Troy Hunt – Introducing you to browser security headers on Pluralsight</a></li>
<li><a href="https://app.pluralsight.com/library/courses/browser-security-headers" rel="nofollow ugc">PluralSight.com – Introduction to Browser Security Headers</a></li>
<li><a href="https://www.owasp.org/index.php/List_of_useful_HTTP_headers" rel="nofollow ugc">OWASP – List of useful HTTP headers</a></li>
<li><a href="https://scotthelme.co.uk/hardening-your-http-response-headers/" rel="nofollow ugc">Scott Helme – Hardening your HTTP response headers</a></li>
</ul>

Headit

Headit is a simple plugin to allow you to add custom HTTP response headers to your site.

MOHIT GOYAL

HTTP Security Header helps protect your WordPress site by adding critical HTTP headers to each response — with no code required. These headers provide additional layers of protection against attacks such as cross-site scripting (XSS), clickjacking, content injection, and resource leaks.
This plugin offers a modern, responsive admin dashboard with validation, fallback safety, and full control over each header’s default or custom value.
<h3>🔎 Scan Your Website Security Headers</h3>
Before configuring headers, instantly check your website’s current security score using our online header scanner:
👉 <a href="https://inspiredmonks.com/http-security-header-scanner/" rel="nofollow ugc">Scan Your Website Security Headers</a>
✔ Enter your website URL 
✔ Get instant Security Grade (A+ to F) 
✔ See which headers are Present or Missing 
✔ Get clear, actionable recommendations 
✔ Easily fix them using this plugin
Used by thousands of websites to enhance security and protect user data.
Features Include: 
– Visual toggles for enabling/disabling headers 
– Option to use default or custom header values 
– Secure fallback if a header is misconfigured 
– Integrated header validation 
– Support for all major browser-supported headers 
– Nonce-based saving and admin notices 
– WP Multisite compatible 
– “Disable All” and “Reset to Important Headers” actions 
– Per-header input validation with real-time error fallback
Supported Headers: 
* Strict-Transport-Security (HSTS) 
* X-Frame-Options 
* X-Content-Type-Options 
* Referrer-Policy 
* Content-Security-Policy 
* Permissions-Policy 
* X-XSS-Protection 
* X-Permitted-Cross-Domain-Policies 
* Expect-CT 
* Cross-Origin-Opener-Policy (COOP) 
* Cross-Origin-Resource-Policy (CORP) 
* Cross-Origin-Embedder-Policy (COEP)
<h3>Features</h3>
<ul>
<li>Lightweight and performance-focused </li>
<li>No front-end impact </li>
<li>Choose default or custom header values </li>
<li>Secure validation and auto-fallbacks </li>
<li>Seamless plugin compatibility (including WP Rocket) </li>
<li>Fully translation-ready and i18n-compliant </li>
<li>Nonce-protected admin save actions </li>
<li>Optional reset-to-default support </li>
<li>Reset or disable all headers with one click</li>
</ul>

HTTP Security Header


I recently integrated the Security Header plugin into my WordPress site, and it has significantly improved my website's security posture. The user-friendly interface made it easy to enable essential HTTP security headers with just a few clicks. 


Essential for Enhancing Website Security

Add and manage essential HTTP security headers with ease. Protect your WordPress site from XSS, clickjacking, and other common vulnerabilities.

Headit vs HTTP Security Header