What Are Cookies?
Last Updated: 03/04/2024
Cookies are small text files that are placed on your device by apps and websites that you visit. Cookies are widely used in order to make websites work, fulfill your preferences, and provide information to the owners of websites.
The table below explains the cookies we use and why.
|
Cookie Name |
Provider |
Description |
|---|---|---|
|
_clck |
Collects data on the user’s navigation and behavior on the website. This is used to compile statistical reports and heatmaps for the website owner. |
|
|
_clsk |
Registers statistical data on users' behaviour on the website. Used for internal analytics by the website operator. |
|
|
_cltk |
Registers statistical data on users' behaviour on the website. Used for internal analytics by the website operator. |
|
|
_fbp |
Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers. |
|
|
_ga |
Used to distinguish users for Google Analytics. |
|
|
_ga_# |
Used by Google Analytics to collect data on the number of times a user has visited the website as well as dates for the first and most recent visit. |
|
|
_gat |
Used to throttle the request rate for Google Analytics. |
|
|
_gcl_au |
This cookie takes information on clicks and stores it in a first-party cookie so that conversions can be attributed outside the landing page. |
|
|
_gid |
Used to distinguish users for Google Analytics. |
|
|
_pin_unauth |
Used by Pinterest to track the usage of services. |
|
|
_px2 |
Used in context with the website's BotManager. The BotManager detects, categorizes, and compiles reports on potential bots trying to access the website. |
|
|
_pxff_fp |
Used by PerimeterX to detect fraud and bot activity. |
|
|
_pxff_rf |
Used by PerimeterX to detect fraud and bot activity. |
|
|
_pxff_tm |
Used to distinguish between different users coming from the same IP address. |
|
|
_pxhd |
The PerimeterX hashed data cookie is responsible for linking the first risk request with the browser activities for better user tracking. |
|
|
_pxvid |
This cookie is used to distinguish between humans and bots. |
|
|
_rdt_uuid |
A Reddit cookie is used to display relevant advertising to visitors. |
|
|
_uetsid |
Collects data on visitor behavior from multiple websites, in order to present more relevant advertisements - This also allows the website to limit the number of times that they are shown the same advertisement. |
|
|
_uetsid_exp |
Contains the expiry date for the cookie with the corresponding name. |
|
|
_uetvid |
Used to track visitors on multiple websites, in order to present relevant advertisements based on the visitor's preferences. |
|
|
_uetvid_exp |
Contains the expiry date for the cookie with the corresponding name. |
|
|
AWSELB |
Used to distribute traffic to the website on several servers in order to optimize response times. |
|
|
AWSELBCORS |
Registers which server cluster is serving the visitor. This is used in context with load balancing to optimize the user experience. |
|
|
CookieConsent |
Stores the user's cookie consent state for the current domain. |
|
|
eng_mt |
Tracks the conversion rate between the user and optimizes the relevance of the advertisements used across the Taboola ad network. |
|
|
Geo |
Stores a user’s geographical location.
|
|
|
optimizely_data$$#$$layer_map |
Stores bucketing information within mutual exclusion groups. |
|
|
optimizely_data$$#$$layer_states |
Stores bucketing decisions (variation and holdback assignment) for each layer in Optimizely Web & Optimizely Personalization |
|
|
optimizely_data$$#$$session_state |
Tracks the session identifier and timestamp, which helps Optimizely identify sessions for analytics purposes. |
|
|
optimizely_data$$#$$tracker_optimizely |
Temporary storage for the batched sending of events to the Optimizely Event API. |
|
|
optimizely_data$$#$$variation_map |
Records the variation that the visitor has seen for each experiment. This allows us to deliver a consistent experience on successive page loads. |
|
|
optimizely_data$$#$$visitor_profile |
Stores the visitor's values for various audience conditions. This is particularly important for "sticky" conditions like Ad Campaign, Source Type, and Referrer for which we need to rely on the first observed value. |
|
|
optimizely_data$$pending_events |
This cookie is set to make split tests on the website, which optimizes the website's relevance to the visitor. |
|
|
optimizelyDomainTestCookie |
Tracks the conversion rate between the user and the advertisement banners on the website - This serves to optimize the relevance of the advertisements on the website. |
|
|
optimizelyEndUserId |
Stores a visitor's unique Optimizely identifier. It's a combination of a timestamp and a random number. No other information about you or your visitors is stored inside. |
|
|
Preferences |
Caches user’s preferences for various systems. |
|
|
PXcNj12cyX_px_c_p_PXcNj12cyX |
Used by PerimeterX to detect fraud and bot activity. |
|
|
PXcNj12cyX_px_fp |
Used by PerimeterX to detect fraud and bot activity. |
|
|
PXcNj12cyX_px_hvd |
Used by PerimeterX to detect fraud and bot activity. |
|
|
PXcNj12cyX_px_nfsp |
Used by PerimeterX to detect fraud and bot activity. |
|
|
PXcNj12cyX_pxtiming |
Used by PerimeterX to detect fraud and bot activity. |
|
|
pxcts |
Used by PerimeterX to detect fraud and bot activity. |
|
|
pxsid |
Used by PerimeterX to detect fraud and bot activity. |
|
|
RequestVerificationToken |
Necessary for protecting against CSRF attacks. |
|
|
ResponsiveSwitch.DesktopMode |
A saved user preference determines whether or not a desktop-sized view should be rendered on smaller viewports. |
|
|
sublevel |
Used by Google Analytics to determine which subscription level the user has. |
|
|
MUID |
Used widely by Microsoft as a unique user ID. The cookie enables user tracking by synchronizing the ID across many Microsoft domains. |
|
|
SRM_B |
Tracks the user’s interaction with the website’s search bar function. This data can be used to present the user with relevant products or services. |
|
|
IDE |
These cookies set by a third party (DoubleClick) and are used for serving targeted advertisements that are relevant to you across the web. Targeted advertisements may be displayed to you based on your previous visits to this website. For example, advertisements about a topic you have expressed an interest in while browsing our site may be displayed t you across the web. In addition, these cookies measure the conversion rate of ads presented to the user. For more information, please visit www.google.com/policies/privacy/partners/. |
|
|
pagead/landing |
Used by doubleclick.net, collects data on visitor behavior from multiple websites, in order to present more relevant advertisements - This also allows the website to limit the number of times that they are shown the same advertisement. |
|
|
test_cookie |
Used to check if the user's browser supports cookies. |
|
|
fr |
Used by Facebook to deliver a series of advertisement products such as real-time bidding from third-party advertisers. |
|
|
tr |
Used by Facebook to deliver a series of advertisement products such as real-time bidding from third-party advertisers. |
|
|
ads/ga-audiences |
Used by Google AdWords to re-engage visitors that are likely to convert to customers based on the visitor's online behavior across websites. |
|
|
pagead/1p-user-list/# |
The cookie tracks if the user has shown interest in specific products or events across multiple websites and facilitates payment of referral fees between websites. |
|
|
pagead/landing |
Used by doubleclick.net, this cookie collects data on visitor behavior from multiple websites, in order to present more relevant advertisements. This also allows the website to limit the number of times that they are shown the same advertisement. |
|
|
_gsid |
UUID value used to identify multiple interactions from a single device and distinguish between users. |
|
|
ANONCHK |
Registers data on visitors from multiple visits and on multiple websites. This information is used to measure the efficiency of advertisements on websites. |
|
|
c.gif |
Collects data on the user’s navigation and behavior on the website. This is used to compile statistical reports and heatmaps for the website owner. |
|
|
CLID |
Identifies the first time Clarity has seen a user on any site using Clarity. | |
|
SM |
Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads. |
|
| MR | clarity.microsoft.com |
Indicates whether to refresh the MUID cookie. |
|
MUID |
Used widely by Microsoft as a unique user ID. The cookie enables user tracking by synchronizing the ID across many Microsoft domains. |
|
|
AWSELBCORS |
Registers which server cluster is serving the visitor. This is used in context with load balancing to optimize the user experience. |
|
|
https://#_oeu#.#$$layer_map |
Stores bucketing information within mutual exclusion groups. See Optimizely for more information. |
|
|
https://#_oeu#.#$$layer_states |
Stores bucketing decisions (variation and holdback assignment) for each layer in Optimizely Web & Optimizely Personalization. See Optimizely for more information. |
|
|
https://#_oeu#.#$$session_state |
Tracks the session identifier and timestamp, which helps Optimizely identify sessions for analytics purposes. See Optimizely for more information. |
|
|
https://#_oeu#.#$$tracker_optimizely |
Temporary storage for the batched sending of events to the Optimizely Event API. See Optimizely for more information. |
|
|
https://#_oeu#.#$$variation_map |
Records the variation that the visitor has seen for each experiment. This allows us to deliver a consistent experience on successive page loads. See Optimizely for more information. |
|
|
https://#_oeu#.#$$visitor_profile |
Stores the visitor's values for various audience conditions. This is particularly important for "sticky" conditions like Ad Campaign, Source Type, and Referrer for which we need to rely on the first observed value. See Optimizely for more information. |
|
|
https://www.dndbeyond.com_pending_events |
The temporary storage of XMLHttpRequest information, enabling the snippet to reliably send requests (e.g., to the Event API) even if the visitor navigates to a new page while a request is in progress. |
|
|
optimizelyRumLB |
Used to distribute traffic to the website on several servers in order to optimize response times. |
|
|
_pinterest_ct_ua |
Used by Pinterest to track the usage of services. |
|
|
v3 |
Used by Pinterest to track the usage of services. |
|
|
rp.gif |
Necessary for the implementation of Reddit.com's share-button function. |
|
|
i/adsct |
Twitter uses the cookie in order to determine the number of visitors accessing the website through Twitter advertisement content. |
|
|
muc_ads |
Collects data on user behavior and interaction in order to optimize the website and make advertisements on the website more relevant. |
|
|
api_token |
Necessary for the implementation of video content on the website. |
|
|
experiment_overrides |
Collects data on the user across websites - This data is used to make advertisements more relevant. |
|
|
referrer_url |
Detects how the user reached the website by registering their last URL address. |
|
|
server_session_id |
Registers which server cluster is serving the visitor. This is used in context with load balancing to optimize user experience. |
|
|
unique_id |
Preserves user state across page requests. |
|
|
unique_id_durable |
Registers whether the user is logged in. This allows the website owner to make parts of the website inaccessible, based on the user's log-in status. |
|
|
livestreamResumeTimes |
Contains a timestamp for the website’s video content. This allows the user to resume watching without having to start over if the user leaves the video or website. |
|
|
local_copy_unique_id |
Contains data on visitor's video-content preferences - This allows the website to remember parameters such as preferred volume or video quality. The service is provided by Vimeo.com. |
|
|
local_storage_app_session_id |
Preserves user state across page requests.
|
|
|
local_storage_device_id |
Preserves user state across page requests. |
|
|
sentry_device_id |
Preserves user state across page requests. |
|
|
session_storage_last_visited_twitch_url |
Stores the user's video player preferences using embedded Twitch video. |
|
|
session_storage_unique_id |
This cookie is necessary for the login function on the website. |
|
|
i/adsct |
Twitter uses the cookie in order to determine the number of visitors accessing the website through Twitter advertisement content. |
|
|
personalization_id |
We have an embedded Twitter feed on our support sites so that things like service outages announced on Twitter are surfaced to players seeking help. This cookie is accessed by the embedded Twitter widget, but neither it nor our site sets the cookie.
|
|
|
UID |
The data is used by the marketing research network, Scorecard Research, to analyze traffic patterns and carry out surveys to help their clients better understand the customer's preferences. |
|
|
_tt_enable_cookie |
Confirm to Tiktok that a user has enabled cookies. |
|
|
_ttp |
To measure and improve the performance of your advertising campaigns and to personalize the user's experience (including ads) on TikTok. |
|
|
_dd_s |
This cookie is used by Datadog to monitor performance for a given user across multiple pages |
|
|
hjSessionUser# |
A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session. |
|
|
CobaltSession |
A cookie that contains a user session identifier to keep a user logged in as they browse D&D Beyond. |
|
|
marketplace_filter_show_owned |
A cookie used to determine whether to show users marketplace content they already own. |
|
|
sailthru_content |
Tracks recent pageviews for all visitors, and can be used to populate a new user profile. |
|
|
sailthru_hid |
Uniquely identifies known users in order to track their onsite activity. |
|
|
sailthru_visitor |
The cookie contains an id that is used to identify a user's pageviews within a session. |
|
|
User |
A cookie that contains an identifier specific to the logged in user |
|
|
UserInfo |
A cookie that contains the user's id, session id, and join date. Used to enhance forum functionality. |
Third-party service providers:
- Bing Ads
- Facebook (Connect, Custom Audiences, Social Plugin)
- Gamesight
- Google Ad Trackers (GA Audiences, AdWords Conversion, DoubleClick, Google Dynamic Remarketing)
- Google Tag Manager
- Gravatar
- Imgur
- Lotame
- Microsoft Clarity
- Optimizely
- Pinterest, Pinterest Conversion Tracker
- PerimeterX
- Sailthru Horizon
- ScoreCard Research Beacon
- Taboola
- TikTok Analytics
- Twitter (Advertising, Analytics, Conversion, Syndication)
- Datadog
- Hotjar