a11y |
Used in for performance and accessibility. |
act |
Used for analytics and research. |
ar |
Used for security, site and product integrity. |
datr |
Identifies browsers for purposes of security and site integrity, including for account recovery, and identification of potentially compromised accounts. |
aks |
Determines the login state of a person visiting accountkit.com |
aksb |
Authenticates logins using Account Kit. |
av |
Used for security, site and product integrity. |
campaign_click_url |
Records the Facebook URL that an individual landed on after clicking on an ad promoting Facebook. |
Checkpoint |
Used for authentication. |
csm |
Indicates when HTTPS is needed to access FB servers. |
dbln |
Used to enable device-based logins. |
ddid |
Used to open a specific location in an advertisers app upon installation. |
dpr |
Used in for performance. |
fr |
Primary advertising cookie, used to deliver, measure, and improve the relevancy of ads. |
hckd |
Used for security, site and product integrity. |
i_id |
Used for site features and services. |
i_key |
Used for site features and services. |
i_user |
Used for site features and services. |
ick |
Stores an encryption key used to encrypt cookies. |
js_ver |
Records the age of Facebook javascript files. |
locale |
Identifies the country and chosen language of the last logged in user of the browser or the international domain used to access Facebook. |
lp |
Used for authentication. |
lu |
Used to record whether the person chose to remain logged in. |
m_ts |
Used for site features and services. |
m_pixel_ratio |
Used in for performance. |
m_user |
Used to authenticate your identity mobile website. |
next |
Used for site features and services. |
next_path |
Used for site features and services. |
noscript |
Used for site features and services. |
oo |
Used to record advertising opt outs. |
p |
Used in for performance. |
pl |
Used to record that a device or browser logged in via Facebook platform. |
presence |
Used for site features and services. |
rc |
Used to optimize site performance for advertisers. |
rdir |
Used for site features and services. |
reg_ext_ref |
Used for analytics and research. |
reg_fb_gate |
Used for analytics and research. |
reg_fb_ref |
Used for analytics and research. |
reg_uniqueid |
Used for analytics and research. |
s |
Used to indicate the last time a person entered his or her password. |
sb |
Identifies browser for login authentication purposes. |
sfau |
Optimizes recovery flow after failed login attempts. |
sfiu |
Used for security, site and product integrity. |
sW |
Used in for performance. |
wd |
Used in for performance. |
x-referer |
Used for analytics and research. |
x-src |
Used for analytics and research. |
xs |
Used in conjunction with the c_user cookie to authenticate your identity to Facebook. |