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What are cookies?

Cookies are small pieces of data, stored in text files, that are stored on your computer or other devices when websites are loaded in a browser. They are widely used to ‘remember’ you and your preferences, either for a single visit (through a ’session cookie’) or for multiple repeat visits (using a ‘persistent cookie’). They ensure a consistent and efficient experience for visitors and perform essential functions such as allowing users to register and remain logged in. Cookies may be set by the site that you are visiting (known as ‘first party cookies’), or by other websites who serve up content on that site (‘third party cookies’).

Cookies set by Jetpack

Cookies are used by Jetpack in a variety of different ways. The cookies set will depend on the Jetpack features that are enabled. The cookies are only set when a user interacts with one of these, or to allow admin functions to be performed in wp-admin.

More details are in the tables below, which lists the cookies that are set for visitors and registered users of sites with the Jetpack plugin installed.

Cookies set upon visitor interaction

Jetpack Comments

Cookie NameDurationPurpose
comment_author_347 daysAll three of these are site specific. They duplicate the cookies already set by Core for commenting.
comment_author_email_347 daysAs above.
comment_author_url_347 daysAs above.

Mobile Theme

Cookie NameDurationPurpose
akm_mobile3.5 daysTracking whether or not a user wishes to view the mobile version of a site.


Cookie NameDurationPurpose
jetpack_comments_subscribe_347 daysUsed to store the state of the post and comment subscription checkboxes.
jetpack_blog_subscribe_347 daysAs above.

EU Cookie Law Banner

Cookie NameDurationPurpose
eucookielaw30 daysUsed to store the state of acceptance to the EU Cookie Law banner.

Cookies set for registered users


Cookie NameDurationPurpose
jetpackstatesessionSet to pass state message back to the user across requests
about module activation.

Jetpack Protect

Cookie NameDurationPurpose
jpp_math_pass1 dayRemember if the user has successfully completed a math problem to prove that they’re a real human.

Single Sign On

Cookie NameDurationPurpose
jetpack_sso_redirect_to1 hourAllows for redirect URLs to be stored, necessary for Single Sign On.
jetpack_sso_remember_me1 hourStores ‘me’ values locally, rather than requiring them to be passed to every time for Single Sign On.
jetpack_sso_wpcom_name_1 week or cleared after completing loginStores the display name to show on login page.
jetpack_sso_wpcom_gravatar_1 week or cleared after completing loginStores the Gravatar url to show on login page.
jetpack_sso_original_request1 hourStores the URL of where the original SSO request was made from.
jetpack_sso_nonce10 minutesUsed for nonce verification.


Cookie NameDurationPurpose
stnojs2 daysThe stats module may set an admin-area cookie if the user needs to view stats reports without javascript turned on.

Registered, but not connected

Cookie NameDurationPurpose
tk_aisessionUsed as an anonymous ID if the logged in user is not connected with

Some Jetpack features make use of third party applications and services to enhance the experience of visitors. These include social media platforms such as Facebook and Twitter (through the use of sharing buttons). As a result, cookies may be set by these third parties, and used by them to track your online activity. We have no direct control over the information that is collected by these cookies.

Additional cookies are set for those using wp-admin, and through the connected account.

Controlling cookies

Visitors may wish to restrict the use of cookies, or completely prevent them from being set. Most browsers provide for ways to control cookie behavior such as the length of time they are stored – either through built-in functionality or by utilizing third-party plugins.

To find out more about how to manage and delete cookies, visit For more details about advertising cookies, and how to manage them, visit (EU based), or (US based).

It’s important to note that restricting or disabling the use of cookies can limit the functionality of sites, or prevent them from working correctly at all.