Strict-Transport-Security | max-age=31536000; includeSubDomains; preload | Good | Declare that a website is only accessible over a secure connection (HTTPS).
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X-Frame-Options | DENY | Good | Indicate whether a browser should be allowed to render a page in a <frame>, <iframe>, <embed> or <object>.
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X-Content-Type-Options | nosniff | Good | Indicate that the MIME types advertised in the Content-Type headers should be followed and not be changed.
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Content-Security-Policy | base-uri 'self'; block-all-mixed-content; frame-ancestors 'self'; worker-src blob:; manifest-src 'none'; object-src 'none'; script-src 'strict-dynamic' 'nonce-9jvwn57cjv45un93' | Good | Control resources the user agent is allowed to load for a given page.
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Referrer-Policy | same-origin | Good | Control how much referrer information should be included with requests.
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Clear-Site-Data | — | Good | Control the data stored by a client browser for their origins.
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X-Permitted-Cross-Domain-Policies | — | Good | Control whether a web client such as Adobe Flash Player or Adobe Acrobat has permission to handle data across domains.
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Permissions-Policy | accelerometer=(); autoplay=(); camera=(self); display-capture=(); encrypted-media=(); fullscreen=(self "https://*.youtube-nocookie.com" "https://*.vimeo.com" "https://media.videotool.dk" "https://mediacentral.ucl.ac.uk"); gamepad=(); geolocation=(self); gyroscope=(); hid=(); idle-detection=(self); local-fonts=(); magnetometer=(); microphone=(self); midi=(); payment=(); picture-in-picture=(); publickey-credentials-get=(self); screen-wake-lock=(); serial=(); usb=(); xr-spatial-tracking=() | New | Allow and deny the use of browser features in a document or iframe.
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Cross-Origin-Embedder-Policy | — | New | Configure embedding cross-origin resources into the document.
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Cross-Origin-Opener-Policy | — | New | Ensure a top-level document does not share a browsing context group with cross-origin documents.
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Cross-Origin-Resource-Policy | — | New | Request that the browser blocks no-cors cross-origin/cross-site requests to the given resource.
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X-XSS-Protection | 1; mode=block | Deprecated | Deprecated. Stops pages from loading when they detect reflected cross-site scripting (XSS) attacks.
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Feature-Policy | — | Deprecated | Deprecated. Replaced by the Permissions-Policy header.
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Expect-CT | — | Deprecated | Deprecated. Opt in to reporting and/or enforcement of Certificate Transparency requirements.
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Public-Key-Pins | — | Deprecated | Deprecated. Allows HTTPS websites to resist impersonation by attackers using mis-issued or otherwise fraudulent certificates.
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