This cookie keeps track of a visitor's identity. It is passed to HubSpot on form submission and used when deduplicating contacts.

It contains an opaque GUID to represent the current visitor.

• Cookie

  __hstc
• Duration

  180 days
• Description

  The main cookie for tracking visitors.

  It contains the domain, utk, initial timestamp (first visit), last timestamp (last visit), current timestamp (this visit), and session number (increments for each subsequent session).

  • Cookie

    __hssc
  • Duration

    30 minutes
  • Description

    This cookie keeps track of sessions.

    This is used to determine if HubSpot should increment the session number and timestamps in the __hstc cookie.

    It contains the domain, viewCount (increments each pageView in a session), and session start timestamp.

    • Cookie

      __hssrc
    • Duration

      It expires at the end of the session.
    • Description

      Whenever HubSpot changes the session cookie, this cookie is also set to determine if the visitor has restarted their browser.

      If this cookie does not exist when HubSpot manages cookies, it is considered a new session.