Brave Components

You can check the list of components installed in Brave Browser by navigating to brave://components:

Component	Supported By Brave	What it does	Repo	Comments
Autofill States Data	No	Contains a mapping of acronyms of state names in different countries to the full names. Helps ease autofilling of state data.
Brave Ad Block Updater	Yes	Updates the ad-block lists supported by Brave regularly	https://github.com/brave/adblock-rust
Brave HTTPS Everywhere Updater	Yes	Maintains the HTTPSEverywhere database which is used to upgrade insecure navigations to secure when the matching rules are found	https://github.com/brave/https-everywhere-builder
Brave Local Data Updater	Yes	Used to update AutoplayWhitelist, ExtensionWhitelist, Greaselion scripts and ReferrerWhitelist	https://github.com/brave/autoplay-whitelist, https://github.com/brave/referrer-whitelist, https://github.com/brave/extension-whitelist, https://github.com/brave/brave-site-specific-scripts
Brave SpeedReader Updater	Yes	Maintains data files to support Brave Speedreader	https://github.com/brave-experiments/SpeedReader
Brave Tor Client Updater	Yes	Contains the Brave tor client required to support Tor windows	https://github.com/brave/tor_build_scripts/
Brave User Model Installer	Yes	Maintains data files to support Brave Ads	https://github.com/brave/brave-core-crx-packager/blob/master/scripts/packageClientModelParameterComponent.js
Certificate Error Assistant	No	Helps fix errors in misconfigured SSL certificates		Not able to trigger Certificate Error Assistant in Chrome or Brave
CRLSet	Yes	Maintains a list of websites with bad certificates so that users can be protected from harmful websites
Crowd Deny	No	Revokes all permissions for sites in the list		Work to enable tracked here: https://github.com/brave/brave-browser/issues/10280
Federated Learning of Cohorts	No	Has data to support FLOC		This feature has significant privacy risks and should not be enabled in Brave
File Type Policies	Yes	List of file extensions and how they are handled in download protection		This is used by Safe Browsing
Legacy TLS Deprecation Configuration	No	This component adds a whitelist of domains that can use deprecated TLS 1.0/1.1 components.
MEI Preload	Yes	Used to pre-load media from websites
NTP Sponsored Images	Yes	Updates the NTP Sponsored image assets	https://github.com/brave/brave-core-crx-packager/blob/master/scripts/packageNTPSponsoredImagesComponents.js
NTP Super Referral	Yes	Updates the NTP Super Referral image assets	https://github.com/brave/brave-core-crx-packager/blob/master/scripts/packageNTPSuperReferrerComponent.js
NTP Super Referral mapping table	Yes	Manage NTP SR mapping table (promo code and NTP SR Component id	https://github.com/brave/brave-core-crx-packager/blob/master/scripts/packageNTPSuperReferrerMappingTableComponent.js
youtubedown.js	Yes	Used to update youtubedown.js script	https://github.com/brave/brave-core-crx-packager/blob/master/scripts/packageYoutubedown.js
Origin Trials	No	Metadata for origin trials
Safety Tips	No	Protobuf of malicious domains		Not able to trigger Safety tips in Chrome or Brave
Subresource Filter Rules	No	Contains rules to block websites which don’t follow the better Ads Standard. Its often used to block phishing domains
Widevine	Yes	Widevine’s DRM solution provides the capability to license, securely distribute and protect playback of content on any consumer device
Zxcvbn Data Dictionaries	No	This contains the data like popular English words and names to higlight password strength.		The work to develop a custom password check is being tracked here: https://github.com/brave/brave-browser/issues/12001