Common Helsinki cookies

WIP

Using common Helsinki cookie consent brings the benefit of sharing consents. This is useful both for the user and the service. The user only has to give their consent once and it becomes easier for the service to manage its cookies.

Key principles of using common cookies - You can use common Helsinki cookies if your service is using the *.hel.fi domain.

  • When common cookies are available, use them instead of creating custom cookies. This way the user only has to give their consent once between multiple Helsinki services. - When a common cookie is used, it must be used exactly as described on this page. If you modify the cookie in any way, it is no longer a common cookie. - If your service is using custom cookies alongside common cookies, you still need to ask for consent for the custom cookies (if they are considered optional). - You can either use all or a part of the common cookies. - Note, that some of the services (e.g. Matomo) may require multiple common cookies for it to work.

Common cookies between *.hel.fi sites

The following is a list of approved common cookies between services using *.hel.fi domain. You can find this list as a JSON object in the Helsinki Design System GitHub repository.

General

General cookies are part of the Preferences category.

Table 1: Common preference cookies between *.hel.fi domain services
Cookie nameCookie set byPurpose of usePeriod of validity
i18n-languagehel.fiStores the user's selected language1826 days

Matomo

Matomo cookies are part of the Analytics category.

Table 2: Common Matomo cookies between *.hel.fi domain services
Cookie nameCookie set byPurpose of usePeriod of validity
matomo-page-loadshel.fiTracking page loads393 days
matomo-eventshel.fiTracking what the user does in the user interface393 days