HTTP Headers

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

Summary

Response
404
Total Requests
1
Total Time
692 ms
  • IP
    131.246.168.138
    View Map

  • Timing

    Wait

    2 ms

    DNS

    383 ms

    TCP

    96 ms

    Request

    0 ms

    First Byte

    106 ms

    Download

    1 ms

    Total

    692 ms

  • HTTP Headers

    Server

    nginx

    A name for the server.

    nginx - Description of the server software.

    Date

    Tue, 18 Aug 2026 18:09:40 GMT

    The date and time that the message was sent.

    Content-Type

    text/html; charset=utf-8

    The MIME type of this content.

    Problems were detected with this header

    • Unknown MIME type.
    Content-Length

    12181(12.2 kB)

    The length of the response body in octets (8-bit bytes).

    Connection

    keep-alive

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

    keep-alive - The client would like to keep the connection open.

    X-Powered-By

    Express

    The software powering this site.

    Referrer-Policy

    same-origin

    Controls what referrer information is sent with requests.

    same-origin - Send the full referrer for same origin requests, and nothing for cross-origin.

    Content-Security-Policy

    default-src 'none';base-uri 'self';connect-src 'self' wss://hedge.fachschaft.informatik.uni-kl.de https://vimeo.com/api/v2/video/;font-src 'self';manifest-src 'self';frame-src 'self' https://player.vimeo.com https://www.youtube.com https://gist.github.com;img-src * data:;script-src https://hedge.fachschaft.informatik.uni-kl.de/build/ https://hedge.fachschaft.informatik.uni-kl.de/js/ https://hedge.fachschaft.informatik.uni-kl.de/config 'unsafe-inline' 'nonce-e3a459df-9ab9-43a9-8fa1-84aeeca6115e' 'sha256-81acLZNZISnyGYZrSuoYhpzwDTTxi7vC1YM4uNxqWaM=';style-src https://hedge.fachschaft.informatik.uni-kl.de/build/ https://hedge.fachschaft.informatik.uni-kl.de/css/ 'unsafe-inline';object-src *;form-action 'self';media-src *;frame-ancestors 'self';upgrade-insecure-requests

    The content security policy allows the server to determine what resources the user is allowed to load.

    • Default-Src

      Fallback for all fetches.

      • 'none'

    • Base-URI

      Define what can be used in the base element.

      • 'self'

    • Connect-Src

      Define sources for script interfaces.

      • 'self'
      • wss://hedge.fachschaft.informatik.uni-kl.de
      • https://vimeo.com/api/v2/video/

    • Font-Src

      Define sources for fonts.

      • 'self'

    • Manifest-Src

      Define sources for manifest files.

      • 'self'

    • Frame-Src

      Define sources for frames.

      • 'self'
      • https://player.vimeo.com
      • https://www.youtube.com
      • https://gist.github.com

    • Img-Src

      Define sources for images and favicons.

      • *
      • data:

    • Script-Src

      Define sources for JavaScript.

      • https://hedge.fachschaft.informatik.uni-kl.de/build/
      • https://hedge.fachschaft.informatik.uni-kl.de/js/
      • https://hedge.fachschaft.informatik.uni-kl.de/config
      • 'unsafe-inline'
      • 'nonce-e3a459df-9ab9-43a9-8fa1-84aeeca6115e'
      • 'sha256-81acLZNZISnyGYZrSuoYhpzwDTTxi7vC1YM4uNxqWaM='

    • Style-Src

      Define sources for stylesheets.

      • https://hedge.fachschaft.informatik.uni-kl.de/build/
      • https://hedge.fachschaft.informatik.uni-kl.de/css/
      • 'unsafe-inline'

    • Object-Src

      Define sources for object, embed, and applet elements.

      • *

    • Form-Action

      Define what can be used as the target for forms.

      • 'self'

    • Media-Src

      Define sources for audio, video, and track elements.

      • *

    • Frame-Ancestors

      Define valid parents for frame, iframe, embed, object, and applet.

      • 'self'

    • upgrade-insecure-requests

      Treat insecure URLs as though they are secure.

    Hedgedoc-Version

    1.10.8

    Etag

    W/"2f95-Z5Ry28qbJIwlPNSdI2DOfqjHKUY"

    An identifier for a specific version of a resource.

    • Validator

      weak

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

    • Tag

      2f95-Z5Ry28qbJIwlPNSdI2DOfqjHKUY

    Set-Cookie

    connect.sid=s%3AHLZGjEPUVwYBLzTmEdwGGYRaDjEM9WMK.Ag50%2FkzhkrZWjoM3AFXe1WH86ozIiXXRljG0aglQnxk; Path=/; Expires=Tue, 01 Sep 2026 18:09:40 GMT; HttpOnly; Secure; SameSite=Lax

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

    • connect.sid

      s%3AHLZGjEPUVwYBLzTmEdwGGYRaDjEM9WMK.Ag50%2FkzhkrZWjoM3AFXe1WH86ozIiXXRljG0aglQnxk

      Cookie name and value.

    • Path

      /

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

    • Expires

      Tue, 01 Sep 2026 18:09:40 GMT

      When the cookie should expire.

    • HttpOnly

      Prevents access to the cookie through JavaScript.

    • Secure

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

    • Samesite

      Lax

      Cookie is not sent on cross-site requests but is when following a link to the origin.

    Vary

    Accept-Encoding

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

    • Headers

      • Accept-Encoding
    Strict-Transport-Security

    max-age=31536000; includeSubDomains

    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).

    • includesubdomains

      max-age applies to subdomains as well.