privacy.websites API
Use the browser.privacy API to control usage of the features in the browser that can affect a user’s privacy.
Permissions
Read and modify privacy settings
Types
The settings for cookies.
object
[behavior]
(string, optional)
The type of cookies to allow.
Supported values:
allow_all
reject_all
reject_third_party
allow_visited
reject_trackers
reject_trackers_and_partition_foreign
[nonPersistentCookies]
(boolean, optional) Deprecated.
Whether to create all cookies as nonPersistent (i.e., session) cookies.
TrackingProtectionModeOption
The mode for tracking protection.
string
Supported values:
always
never
private_browsing
Properties
cookieConfig
Allow users to specify the default settings for allowing cookies, as well as whether all cookies should be created as non-persistent cookies. This setting’s value is of type CookieConfig.
firstPartyIsolate
If enabled, the browser will associate all data (including cookies, HSTS data, cached images, and more) for any third party domains with the domain in the address bar. This prevents third party trackers from using directly stored information to identify you across different websites, but may break websites where you login with a third party account (such as a Facebook or Google login.) The value of this preference is of type boolean, and the default value is false.
hyperlinkAuditingEnabled
If enabled, the browser sends auditing pings when requested by a website (<a ping>). The value of this preference is of type boolean, and the default value is true.
protectedContentEnabled
<strong>Available on Windows and ChromeOS only</strong>: If enabled, the browser provides a unique ID to plugins in order to run protected content. The value of this preference is of type boolean, and the default value is true.
referrersEnabled
If enabled, the browser sends referer headers with your requests. Yes, the name of this preference doesn’t match the misspelled header. No, we’re not going to change it. The value of this preference is of type boolean, and the default value is true.
resistFingerprinting
If enabled, the browser attempts to appear similar to other users by reporting generic information to websites. This can prevent websites from uniquely identifying users. Examples of data that is spoofed include number of CPU cores, precision of JavaScript timers, the local timezone, and disabling features such as GamePad support, and the WebSpeech and Navigator APIs. The value of this preference is of type boolean, and the default value is false.
If disabled, the browser blocks third-party sites from setting cookies. The value of this preference is of type boolean, and the default value is true.
trackingProtectionMode
Allow users to specify the mode for tracking protection. This setting’s value is of type TrackingProtectionModeOption, defaulting to private_browsing_only.