HTTP Headers Analyzer

5 / 10

https://jycgvvcgsd.wordpress.com

WordPress → Nginx → Browser
9 missing headers, 1 warnings, 2 notices
JSON API

Header	Value	Explanation
server	nginx	Identifies the software used by the origin server to handle the request (e.g. Apache, Nginx, Cloudflare). Notice Consider removing or minimizing the `Server` header. Even without a version number, it reveals the server software, which aids reconnaissance.
date	sat, 24 oct 2026 18:44:57 gmt	The date and time at which the request was made. A browser uses it for age calculations rather than using its own internal date and time; e.g. when comparing against `Max-Age` or `Expires`.
content-type	text/html; charset=utf-8	The type of the message body, specified as a MIME type.
vary	accept-encoding	The `Vary` header specifies a list of headers that must be considered when caching responses. For a cached response to be used, these headers must match between the cached response and the new request. This ensures that the appropriate version of a resource is served based on factors like language, encoding, or device type.
vary	accept, content-type, cookie	The `Vary` header specifies a list of headers that must be considered when caching responses. For a cached response to be used, these headers must match between the cached response and the new request. This ensures that the appropriate version of a resource is served based on factors like language, encoding, or device type.
x-hacker	want root? visit join.a8c.com/hacker and mention this header.	An Easter egg header used by GitHub. It typically contains a witty message or recruitment information.
host-header	wordpress.com	The `Host-Header` is a non-standard header often used in setups with a reverse proxy or CDN. It typically preserves the original `Host` header sent by the client, while the standard `Host` header may be modified to route the request to the correct backend server. This allows the backend to know the original hostname requested by the client, which can be crucial for proper request handling in multi-domain environments.
link	<https://public-api.wordpress.com/wp-json/?rest_route=/sites/jycgvvcgsd.wordpress.com>; rel="https://api.w.org/"	`rel="https://api.w.org/"` is where you can learn more about WordPress' REST API. Applications can interact with this WordPress site by sending and receiving JSON objects.
link	<https://wp.me/gvjm2>; rel=shortlink	`rel="shortlink"` specifies a shorter URL for the current page, to be used in space-constrained interfaces or for manual entry.
content-encoding	br	Specifies how the resource is compressed. Not to be confused with `Transfer-Encoding` which specifies how the data is transferred. `br` means that the data is compressed with `brotli`. Warning Add a `Content-Length` header. The Content-Length header is required, unless the message is transported using chunked encoding. Without a `Content-Length` header some servers will respond with 400 (bad request) or terminate connections early.
x-ac	1.dca _dca stale
x-remembering	eric binnion <https://friendsofericbinnion.wordpress.com/>
alt-svc	clear	The `alt-svc` header tells the browser that the same content is available over a different protocol. This allows the browser to upgrade to a faster protocol (e.g. HTTP/3 over QUIC) on subsequent requests without a separate negotiation step.
strict-transport-security	max-age=31536000	The `Strict-Transport-Security` header (HSTS) instructs browsers to only use HTTPS for future connections to this domain, enhancing security by preventing downgrade attacks and cookie hijacking. `max-age` specifies the time, in seconds, that the browser should remember to use HTTPS only for this domain.
server-timing	a8c-cdn, dc;desc=dca, cache;desc=stale;dur=3.0	Exposes server-side performance metrics (e.g. database query time, cache lookups, total processing time) to the browser. These metrics appear in the browser's DevTools Network tab, making it easier to diagnose slow responses without needing server-side log access.
content-security-policy		missing Add a `Content-Security-Policy` header. The `Content-Security-Policy` header helps browsers prevent cross site scripting (XSS) and data injection attacks.
referrer-policy		missing Add a `Referrer-Policy` header. When a visitor navigates from one page to another, browsers often pass along referrer information. The `Referrer-Policy` header controls how much referrer information a browser can share. This is important to configure when private information is embedded in the path or query string and passed onto an external destination.
permissions-policy		missing Add a `Permissions-Policy` header. Restrict access to device features like the camera, microphone, location, accelerometer and much more.
cross-origin-embedder-policy		missing Add a `Cross-Origin-Embedder-Policy` header. It requires cross-origin resources to explicitly consent before this page can load them, protecting those resources from being exposed to Spectre-style timing attacks. Together with `Cross-Origin-Opener-Policy`, it enables cross-origin isolation and access to `SharedArrayBuffer`.
cross-origin-opener-policy		missing Add a `Cross-Origin-Opener-Policy` header. It prevents other sites from retaining a `window` reference to this page when opened via `window.open()` or navigation, blocking script-based attacks through shared browsing contexts.
cross-origin-resource-policy		missing Add a `Cross-Origin-Resource-Policy` header. It controls which origins can embed or load this page's resources (images, scripts, etc.), preventing hotlinking and cross-origin data leaks.
x-frame-options		missing Add a `X-Frame-Options` header. The `X-Frame-Options` header prevents this URL from being embedded in an `iframe`. This protects against clickjacking attacks. Alternatively, set a `Content-Security-Policy` header with a `frame-ancestors` directive.
x-content-type-options		missing Add an `X-Content-Type-Options: nosniff` header to prevent browsers from MIME type sniffing. Without it, browsers may interpret files as a different content type than intended, which can lead to security vulnerabilities.
x-permitted-cross-domain-policies		missing Add a `X-Permitted-Cross-Domain-Policies` header to prevent Flash, Adobe Reader and other clients from sharing data across domains.