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
100 ms

  • https://vcook.jp/users/103432

    Status
    200
    Message
    OK
    Time
    100 ms
  • IP
    3.33.148.61
    View Map

  • Timing

    Wait

    1 ms

    DNS

    44 ms

    TCP

    13 ms

    Request

    0 ms

    First Byte

    29 ms

    Download

    1 ms

    Total

    100 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/"033aad453ede4ad1ad99a41c90a0c717"

    An identifier for a specific version of a resource.

    • Validator

      weak

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

    • Tag

      033aad453ede4ad1ad99a41c90a0c717

    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=v5L2Yg8QuwSWFvNL4mDV0li3ajd8dmmnm3muYRpHp%2BE%3D\u0026sid=af571f24-03ee-46d1-9f90-ab9030c2c74c\u0026ts=1793065433"}],"max_age":3600}

    Report to.

    • Group

      heroku-nel

    • Endpoints

      • {"url":"https://nel.heroku.com/reports?s=v5L2Yg8QuwSWFvNL4mDV0li3ajd8dmmnm3muYRpHp%2BE%3D&sid=af571f24-03ee-46d1-9f90-ab9030c2c74c&ts=1793065433"}

    • Max_age

      3600

    Reporting-Endpoints

    heroku-nel="https://nel.heroku.com/reports?s=v5L2Yg8QuwSWFvNL4mDV0li3ajd8dmmnm3muYRpHp%2BE%3D&sid=af571f24-03ee-46d1-9f90-ab9030c2c74c&ts=1793065433"

    Server

    Heroku

    A name for the server.

    Heroku - Description of the server software.

    Set-Cookie

    _vcook_app_session=4GpZLGpAukhuqhR5jJE%2BD3Y0uBJEb2NXz6l8WpZiDpfKWpHqfvR%2FLWlxUXCHXFchk6RXqPZPyCYTCuD8zb2j%2B87bki%2BeIxEHLckETjdpIhqVFNJ7HbJjaIWQLy8WW4pln9YEJWNsFqKpThstlqGeJmwshZoAEvmdEGt5JSbQiuhAMOPmk865A66m2Yb54CdFkSsFYdnCPDwVL2x2oHyvBX9oKb9Rm%2By4ZTOgYrpSClBhQYYskkkjhRQHLgr%2FfCb16HTZBcSIUrMDQ5JcBVt0ta3z5qRNGw5Ljuw%3D--r2JAtn7GGed6mlak--3KL5Jef7WWJIVCgsDzfzww%3D%3D; path=/; secure; HttpOnly

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

    • _vcook_app_session

      4GpZLGpAukhuqhR5jJE%2BD3Y0uBJEb2NXz6l8WpZiDpfKWpHqfvR%2FLWlxUXCHXFchk6RXqPZPyCYTCuD8zb2j%2B87bki%2BeIxEHLckETjdpIhqVFNJ7HbJjaIWQLy8WW4pln9YEJWNsFqKpThstlqGeJmwshZoAEvmdEGt5JSbQiuhAMOPmk865A66m2Yb54CdFkSsFYdnCPDwVL2x2oHyvBX9oKb9Rm%2By4ZTOgYrpSClBhQYYskkkjhRQHLgr%2FfCb16HTZBcSIUrMDQ5JcBVt0ta3z5qRNGw5Ljuw%3D--r2JAtn7GGed6mlak--3KL5Jef7WWJIVCgsDzfzww%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

    36f98d8a-458e-70fe-67f0-9132d01dc749

    X-Runtime

    0.019829

    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

    Tue, 27 Oct 2026 01:43:53 GMT

    The date and time that the message was sent.