Google Analytics（分析）是一款简单易用的工具，可以帮助网站所有者衡量用户与网站内容的互动情况。当用户浏览各个网页时，Google Analytics（分析）向网站所有者提供 JavaScript 代码（库），用来记录与用户查看的网页相关的信息（例如网页的网址）。Google Analytics（分析）JavaScript 库使用 HTTP Cookie 记录用户在之前查看的网页上执行的操作或与网站进行的互动。

Cookie	Duration	Description
_ga_*	2 年	Google analytics cookie. 用于区分用户。
_gat_*	1 分钟	Google Analytics cookie. 用于限制要求率。
_gid_*	24 小时	Google Analytics cookie.  用于区分用户。

Oniads is a tool that allows us to measure digital media campaigns.

Hotjar is a visual tool that allows us to see user behaviour on the web and to make modifications according to the data obtained.

Cookie	Duration	Description
_hjCachedUserAttributes	会议	Hotjar. Collected attributes will only be saved to Hotjar servers if the user interacts with a Hotjar Feedback tool.
_hjid	1年	Hotjar. Ensures data from subsequent visits to the same site are attributed to the same user ID.
_hjSessionUser_	1 年	Hotjar cookie that is set when a user first arrives at a page with the Hotjar script. It is used to preserve the Hotjar user ID unique to that site in the browser. This ensures that behaviour on subsequent visits to the same site will be attributed to the same user ID.
_hjUserAttributesHash	会议	Hotjar. Enables us to know when an attribute has changed and needs to be updated.
_hjViewportId	会议	Hotjar. Stores user viewport details such as size and dimensions.