HTTP Headers

Show the HTTP headers for a URL, with a full break-down of details. Will follow redirects.

Summary

Response
200
Total Requests
1
Total Time
13 ms
  • IP
    192.0.78.12
    View Map

  • Timing

    Wait

    0 ms

    DNS

    4 ms

    TCP

    3 ms

    Request

    0 ms

    First Byte

    3 ms

    Download

    0 ms

    Total

    13 ms

  • HTTP Headers

    Server

    nginx

    A name for the server.

    nginx - Description of the server software.

    Date

    Wed, 13 Aug 2025 08:14:05 GMT

    The date and time that the message was sent.

    Content-Type

    text/html; charset=UTF-8

    The MIME type of this content.

    • Type

      text/html

    • Description

      HTML file

    • Charset

      UTF-8

    Connection

    close

    Control options for the current connection and list of hop-by-hop response fields.

    close - The client or server would like to close the connection.

    Vary

    Accept-Encoding

    Indicates that different content may be provided to different clients, depending on the vary header.

    • Headers

      • Accept-Encoding
    Vary

    accept, content-type, cookie

    Indicates that different content may be provided to different clients, depending on the vary header.

    • Headers

      • accept
      • content-type
      • cookie

    Problems were detected with this header

    • Duplicate header. There is another header with this name and this may cause problems.
    X-Hacker

    Want root? Visit join.a8c.com/hacker and mention this header.

    Host-Header

    WordPress.com

    Link

    <https://wp.me/Pg2T7X-4uy>; rel=shortlink

    Used to express a typed relationship with another resource.

    X-Ac

    20.jfk _dca STALE

    Alt-Svc

    h3=":443"; ma=86400

    Indicate a resource should be loaded from a different server while still appearing to be loaded from this server.

    • Service

      • h3 - :443

    • Service

      • ma - 86400 (1 day)

        Max age for the alternative (seconds).

    Strict-Transport-Security

    max-age=31536000

    A HSTS Policy informing the HTTP client how long to cache the HTTPS only policy and whether this applies to subdomains.

    • Max-Age

      31536000 (1 year)

      The time a browser should remember a site can only be accessed with https (seconds).

    Server-Timing

    a8c-cdn, dc;desc=jfk, cache;desc=STALE;dur=1.0

    Server metrics for the request.

    • A8c-Cdn

    • Dc

      jfk

    • Cache

      STALE

      • dur - 1.0