<h2>Overview</h2>
<p>Helmet is a tool that helps secure Express apps by setting HTTP response headers. These headers can help mitigate various types of attacks such as cross-site scripting and clickjacking. By default, Helmet sets a range of headers to enhance the security of web applications.</p>
<h2>Features</h2>
<ul>
<li><strong>Content-Security-Policy:</strong> Mitigates attacks like cross-site scripting by creating an allow-list for page activities.</li>
<li><strong>Cross-Origin-Opener-Policy:</strong> Helps to isolate processes on a web page.</li>
<li><strong>Cross-Origin-Resource-Policy:</strong> Blocks others from loading resources cross-originally.</li>
<li><strong>Referrer-Policy:</strong> Allows control over the Referer header in requests.</li>
<li><strong>Strict-Transport-Security:</strong> Encourages browsers to prefer secure HTTPS connections.</li>
<li><strong>X-Frame-Options:</strong> Mitigates clickjacking attacks by controlling how your site can be embedded in frames.</li>
<li><strong>XSS-Protection:</strong> Attempts to mitigate cross-site scripting attacks, though Helmet may disable this for better security.</li>
</ul>


Helmetjs

Helmet