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
103 ms

  • https://vcook.jp/users/103432

    Status
    200
    Message
    OK
    Time
    103 ms
  • IP
    13.248.241.119
    View Map

  • Timing

    Wait

    0 ms

    DNS

    46 ms

    TCP

    16 ms

    Request

    1 ms

    First Byte

    29 ms

    Download

    0 ms

    Total

    103 ms

  • HTTP Headers

    Cache-Control

    max-age=0, private, must-revalidate

    Inform all caching mechanisms from server to client whether they may cache this object.

    • Max-Age

      0

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

    • private

      May only be stored by a browser cache.

    • must-revalidate

      Stale caches must not be used.

    Content-Type

    text/html; charset=utf-8

    The MIME type of this content.

    Problems were detected with this header

    • Unknown MIME type.
    Etag

    W/"0a05b728bc3b2aa55313a2cf9d55b4df"

    An identifier for a specific version of a resource.

    • Validator

      weak

      A weak tag is easier to generate and prevents byte range caching.

    • Tag

      0a05b728bc3b2aa55313a2cf9d55b4df

    Nel

    {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}

    Configure network request logging.

    Referrer-Policy

    strict-origin-when-cross-origin

    Controls what referrer information is sent with requests.

    strict-origin-when-cross-origin - Send the full referrer for a same origin request. Send the origin only for cross-domain requests where the protocol level is the same. Otherwise do not send the referrer.

    Report-To

    {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=jIb%2BN0oV%2B4Qv5ehmfnTiYDrbZSiVPYJEPU1v3QzhELg%3D\u0026sid=af571f24-03ee-46d1-9f90-ab9030c2c74c\u0026ts=1789168668"}],"max_age":3600}

    Report to.

    • Group

      heroku-nel

    • Endpoints

      • {"url":"https://nel.heroku.com/reports?s=jIb%2BN0oV%2B4Qv5ehmfnTiYDrbZSiVPYJEPU1v3QzhELg%3D&sid=af571f24-03ee-46d1-9f90-ab9030c2c74c&ts=1789168668"}

    • Max_age

      3600

    Reporting-Endpoints

    heroku-nel="https://nel.heroku.com/reports?s=jIb%2BN0oV%2B4Qv5ehmfnTiYDrbZSiVPYJEPU1v3QzhELg%3D&sid=af571f24-03ee-46d1-9f90-ab9030c2c74c&ts=1789168668"

    Server

    Heroku

    A name for the server.

    Heroku - Description of the server software.

    Set-Cookie

    _vcook_app_session=s4eOdXbc982KbY4HaHBoVY1JaME5Ui2GbQOYolP0H9HwPSWwF0If%2Fi94iQGhAfHr07qq2FnwuKKrjXm27Yi0wYmuJZDnJ6ZDjWPEkMOKN7NHhjSVdrvSAEjdpL%2BoVb5eWZ4rRde4gL9vUZf2Yj0epvJ%2FkOh0h7pVHqmyfW%2B4V1jFOzJJ0hc5b8Jkr7ec1uEhDCeZR80Na5mpwtXzIEI1zInxSR%2BLXd3UI1zmF172NpFjs1grvdWzdeGAPiDUCK79%2FLzGofV5qnqtJFt%2FgiholxWQrTz2wXohz1s%3D--%2BGQdSn8kU%2FKwceYM--rojLUW%2FqymEvH9vReOrbUg%3D%3D; path=/; secure; HttpOnly

    A cookie sent from the server to be set on the client

    • _vcook_app_session

      s4eOdXbc982KbY4HaHBoVY1JaME5Ui2GbQOYolP0H9HwPSWwF0If%2Fi94iQGhAfHr07qq2FnwuKKrjXm27Yi0wYmuJZDnJ6ZDjWPEkMOKN7NHhjSVdrvSAEjdpL%2BoVb5eWZ4rRde4gL9vUZf2Yj0epvJ%2FkOh0h7pVHqmyfW%2B4V1jFOzJJ0hc5b8Jkr7ec1uEhDCeZR80Na5mpwtXzIEI1zInxSR%2BLXd3UI1zmF172NpFjs1grvdWzdeGAPiDUCK79%2FLzGofV5qnqtJFt%2FgiholxWQrTz2wXohz1s%3D--%2BGQdSn8kU%2FKwceYM--rojLUW%2FqymEvH9vReOrbUg%3D%3D

      Cookie name and value.

    • Path

      /

      The client will only send the cookie when requesting this path, or subdirectories, from the server.

    • secure

      The cookie is only sent when requesting from a https domain.

    • HttpOnly

      Prevents access to the cookie through JavaScript.

    Strict-Transport-Security

    max-age=63072000; includeSubDomains

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

    • Max-Age

      63072000 (2 years)

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

    • includesubdomains

      max-age applies to subdomains as well.

    Via

    1.1 heroku-router

    Added by proxies to track a request through proxies and to avoid loops.

    • Version

      1.1

      Protocol version.

    • Host

      Host name.

    X-Content-Type-Options

    nosniff

    Prevents Internet Explorer from MIME-sniffing a response away from the declared content-type.

    nosniff - Block requests if type 'style' or 'script'.

    X-Download-Options

    noopen

    X-Frame-Options

    SAMEORIGIN

    Clickjacking protection.

    SAMEORIGIN - No rendering if origin mismatch.

    X-Permitted-Cross-Domain-Policies

    none

    Specifies if a cross-domain policy is allowed.

    none - No policy is allowed.

    X-Request-Id

    dc7dce68-3d2a-d9dd-df47-50f783da5f84

    X-Runtime

    0.017425

    X-Xss-Protection

    1; mode=block

    Cross-site scripting (XSS) filter.

    • 1

      Enable XSS filtering.

    • Mode

      Filtering mode.

      • block - Block page if XSS is detected.
    Date

    Fri, 11 Sep 2026 23:17:48 GMT

    The date and time that the message was sent.