To take advantage of the performance boosting features of Jetpack, certain information about the content, settings, and setup of your site are synced with our servers. This data begins to sync when Jetpack is installed and connected to a WordPress.com User ID.
Content and Settings
In order to display accurate information about your site in places such as notification emails and the WordPress.com Reader, Jetpack syncs the following information:
- Permalink structure
- Custom Post Types
- Related metadata
This index of your content helps reduce the load on your site’s servers, and also allows related content to be generated and displayed where appropriate.
We also sync the following data:
- Comments and their metadata
- Taxonomies (including categories and tags)
- Custom taxonomies (if present)
This enables a number of features, including protecting your comments from spam (if using Akismet), displaying notifications, showing content in appropriate categories in the WordPress.com Reader, as well as adding the ability to edit your menus and post data from WordPress.com (including through the desktop and mobile apps).
Themes and Plugins
The following theme and plugin related information is synced:
- The name of the theme or plugin in use
- The theme or plugin’s version and capabilities (e.g. featured image, menu locations, and pending updates)
- Plugin installation path
- All whitelisted options, constants, and function outputs (e.g. whether the site is a multi-site install)
- WooCommerce individual order items and related metadata
This enables Jetpack to provide services such as:
- Remote plugin installation and management
- Automatic plugin updates
- Automatic theme updates (future)
- Theme installation (future)
- Theme customization from WordPress.com (including via the desktop or mobile apps)
- Aggregated statistics and insights (future)
Jetpack also syncs other miscellaneous items of user information, such as:
- The usernames, email addresses, roles and capabilities (but not passwords) of registered users.
- User ID of any users that make changes to the site, and the time that the change was made (e.g. ID of the user that added a new user, modified the site icon, or trashed a comment).
The user-related data is used by Jetpack for a variety of purposes. This includes:
- Preventing unauthorized access.
- Providing audit logs (future).
- Managing followers (e-mail notification of subscribers).
If you’d like to read in more detail about what we sync, why, and what we do with it, please refer to the additional resources: