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You can configure the app by copying `config.sample.json` to
`config.json` and customising it:
For a good example, see
1. `default_server_config` sets the default homeserver and identity server URL for
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Element to use. The object is the same as returned by [https://<server_name>/.well-known/matrix/client](,
with added support for a `server_name` under the `m.homeserver` section to display
a custom homeserver name. Alternatively, the config can contain a `default_server_name`
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instead which is where Element will go to get that same object, although this option is
deprecated - see the `.well-known` link above for more information on using this option.
Note that the `default_server_name` is used to get a complete server configuration
whereas the `server_name` in the `default_server_config` is for display purposes only.
* *Note*: The URLs can also be individually specified as `default_hs_url` and
`default_is_url`, however these are deprecated. They are maintained for backwards
compatibility with older configurations. `default_is_url` is respected only
if `default_hs_url` is used.
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* Element will fail to load if a mix of `default_server_config`, `default_server_name`, or
`default_hs_url` is specified. When multiple sources are specified, it is unclear
which should take priority and therefore the application cannot continue.
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* As of Element 1.4.0, identity servers are optional. See [Identity servers](#identity-servers) below.
1. `features`: Lookup of optional features that may be force-enabled (`true`) or force-disabled (`false`).
When features are not listed here, their defaults will be used, and users can turn them on/off if `showLabsSettings`
allows them to. The available optional experimental features vary from release to release and are
[documented]( The feature flag process is [documented]( as well.
1. `showLabsSettings`: Shows the "labs" tab of user settings. Useful to allow users to turn on experimental features
they might not otherwise have access to.
1. `brand`: String to pass to your homeserver when configuring email notifications, to let the
homeserver know what email template to use when talking to you.
1. `branding`: Configures various branding and logo details, such as:
1. `welcomeBackgroundUrl`: An image to use as a wallpaper outside the app
during authentication flows. If an array is passed, an image is chosen randomly for each visit.
1. `authHeaderLogoUrl`: An logo image that is shown in the header during
authentication flows
1. `authFooterLinks`: a list of links to show in the authentication page footer:
`[{"text": "Link text", "url": ""}, {"text": "Other link", ...}]`
1. `reportEvent`: Configures the dialog for reporting content to the homeserver
1. `adminMessageMD`: An extra message to show on the reporting dialog to
mention homeserver-specific policies. Accepts Markdown.
1. `integrations_ui_url`: URL to the web interface for the integrations server. The integrations
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server is not Element and normally not your homeserver either. The integration server settings
may be left blank to disable integrations.
1. `integrations_rest_url`: URL to the REST interface for the integrations server.
1. `integrations_widgets_urls`: list of URLs to the REST interface for the widget integrations server.
1. `bug_report_endpoint_url`: endpoint to send bug reports to (must be running a server). Bug reports are sent when a user clicks
"Send Logs" within the application. Bug reports can be disabled/hidden by leaving the
`bug_report_endpoint_url` out of your config file.
1. `roomDirectory`: config for the public room directory. This section is optional.
1. `roomDirectory.servers`: List of other homeservers' directories to include in the drop
down list. Optional.
1. `default_theme`: name of theme to use by default (e.g. 'light')
1. `update_base_url` (electron app only): HTTPS URL to a web server to download
updates from. This should be the path to the directory containing `macos`
and `win32` (for update packages, not installer packages).
1. `piwik`: Analytics can be disabled by setting `piwik: false` or by leaving the piwik config
option out of your config file. If you want to enable analytics, set `piwik` to be an object
containing the following properties:
1. `url`: The URL of the Piwik instance to use for collecting analytics
1. `whitelistedHSUrls`: a list of HS URLs to not redact from the analytics
1. `whitelistedISUrls`: a list of IS URLs to not redact from the analytics
1. `siteId`: The Piwik Site ID to use when sending analytics to the Piwik server configured above
1. `welcomeUserId`: the user ID of a bot to invite whenever users register that can give them a tour
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1. `embeddedPages`: Configures the pages displayed in portions of Element that
embed static files, such as:
1. `welcomeUrl`: Initial content shown on the outside of the app when not
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logged in. Defaults to `welcome.html` supplied with Element.
1. `homeUrl`: Content shown on the inside of the app when a specific room is
not selected. By default, no home page is configured. If one is set, a
button to access it will be shown in the top left menu.
1. `loginForWelcome`: Overrides `welcomeUrl` to make the welcome page be the
same page as the login page when `true`. This effectively disables the
welcome page.
1. `defaultCountryCode`: The ISO 3166 alpha2 country code to use when showing
country selectors, like the phone number input on the registration page.
Defaults to `GB` if the given code is unknown or not provided.
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1. `settingDefaults`: Defaults for settings that support the `config` level,
as an object mapping setting name to value (note that the "theme" setting
is special cased to the `default_theme` in the config file).
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1. `disable_custom_urls`: disallow the user to change the
default homeserver when signing up or logging in.
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1. `permalinkPrefix`: Used to change the URL that Element generates permalinks with.
By default, this is "" to generate (spec) permalinks.
Set this to your Element instance URL if you run an unfederated server (eg:
1. `jitsi`: Used to change the default conference options. Learn more about the
Jitsi options at [](./
Use a local widget wrapper for Jitsi calls Effectively fixes Effectively fixes Fixes Fixes Jitsi widgets not working for guests ( Fixes Previously we were relying on an integration manager to be defined, functional, and alive in order to join Jitsi calls. This commit changes this so we aren't reliant on an integration manager for Jitsi calls at all, and gives people the option of choosing a Jitsi server via the config.json. This side is just the wrapper/shell: the logic is mostly in the react-sdk (to be linked via PRs). This layer simply has an HTML file exported that can be used to render a Jitsi widget, and the react-sdk constructs a URL to access it locally. This is similar to how the mobile apps handle Jitsi widgets: instead of iframing the widget URL directly into the app, they pull apart the widget information and natively render it. We're effectively doing the same here by parsing the widget options and using our local wrapper instead of whatever happens to be defined in the widget state event. Integration managers should still continue to offer a widget URL for Jitsi widgets as this is what the spec requires. A large part of this is based upon Dimension's handling of Jitsi and widgets in general: a license has been granted to allow Riot (and therefore the react-sdk) to use the code and be inspired by it.
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1. `preferredDomain`: The domain name of the preferred Jitsi instance. Defaults
to ``. This is used whenever a user clicks on the voice/video
call buttons - integration managers may use a different domain.
1. `enable_presence_by_hs_url`: The property key should be the URL of the homeserver
and its value defines whether to enable/disable the presence status display
from that homeserver. If no options are configured, presence is shown for all
1. `disable_guests`: Disables guest access tokens and auto-guest registrations.
Defaults to false (guests are allowed).
1. `disable_login_language_selector`: Disables the login language selector. Defaults
to false (language selector is shown).
1. `disable_3pid_login`: Disables 3rd party identity options on login and registration form
Defaults to false (3rd party identity options are shown).
1. `default_federate`: Default option for room federation when creating a room
Defaults to true (room federation enabled).
1. `desktopBuilds`: Used to alter promotional links to the desktop app. By default
the builds are considered available and accessible from This
config option is typically used in the context of encouraging encrypted message
search capabilities (Seshat). All the options listed below are required if this
option is specified.
1. `available`: When false, the desktop app will not be promoted to the user.
1. `logo`: An HTTP URL to the avatar for the desktop build. Should be 24x24, ideally
an SVG.
1. `url`: An HTTP URL for where to send the user to download the desktop build.
1. `mobileGuideToast`: Whether to show a toast a startup which nudges users on
iOS and Android towards the native mobile apps. The toast redirects to the
mobile guide if they accept. Defaults to false.
1. `audioStreamUrl`: If supplied, show an option on Jitsi widgets to stream
audio using Jitsi's live streaming feature. This option is experimental and
may be removed at any time without notice.
Note that `index.html` also has an og:image meta tag that is set to an image
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hosted on This is the image used if links to your copy of Element
appear in some websites like Facebook, and indeed Element itself. This has to be
static in the HTML and an absolute URL (and HTTP rather than HTTPS), so it's
not possible for this to be an option in config.json. If you'd like to change
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it, you can build Element, but run
`RIOT_OG_IMAGE_URL="" yarn build`.
Alternatively, you can edit the `og:image` meta tag in `index.html` directly
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each time you download a new version of Element.
Identity servers
The identity server is used for inviting other users to a room via third party
identifiers like emails and phone numbers. It is not used to store your password
or account information.
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As of Element 1.4.0, all identity server functions are optional and you are
prompted to agree to terms before data is sent to the identity server.
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Element will check multiple sources when looking for an identity server to use in
the following order of preference:
1. The identity server set in the user's account data
* For a new user, no value is present in their account data. It is only set
if the user visits Settings and manually changes their identity server.
2. The identity server provided by the `.well-known` lookup that occurred at
3. The identity server provided by the Riot config file
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If none of these sources have an identity server set, then Element will prompt the
user to set an identity server first when attempting to use features that
require one.
Currently, the only two public identity servers are and, however in the future identity servers will be
Desktop app configuration
UI Features
Parts of the UI can be disabled using UI features. These are settings which appear
under `settingDefaults` and can only be `true` (default) or `false`. When `false`,
parts of the UI relating to that feature will be disabled regardless of the user's
Currently, the following UI feature flags are supported:
* `UIFeature.urlPreviews` - Whether URL previews are enabled across the entire application.
* `` - Whether prompts to supply feedback are shown.
* `UIFeature.voip` - Whether or not VoIP is shown readily to the user. When disabled,
Jitsi widgets will still work though they cannot easily be added.
* `UIFeature.widgets` - Whether or not widgets will be shown.
* `UIFeature.flair` - Whether or not community flair is shown in rooms.
* `UIFeature.communities` - Whether or not to show any UI related to communities. Implicitly
disables `UIFeature.flair` when disabled.
* `UIFeature.advancedSettings` - Whether or not sections titled "advanced" in room and
user settings are shown to the user.
* `UIFeature.shareQrCode` - Whether or not the QR code on the share room/event dialog
is shown.
* `UIFeature.shareSocial` - Whether or not the social icons on the share room/event dialog
are shown.
* `UIFeature.identityServer` - Whether or not functionality requiring an identity server
is shown. When disabled, the user will not be able to interact with the identity
server (sharing email addresses, 3PID invites, etc).
* `UIFeature.thirdPartyId` - Whether or not UI relating to third party identifiers (3PIDs)
is shown. Typically this is considered "contact information" on the homeserver, and is
not directly related to the identity server.
* `UIFeature.registration` - Whether or not the registration page is accessible. Typically
useful if accounts are managed externally.
* `UIFeature.passwordReset` - Whether or not the password reset page is accessible. Typically
useful if accounts are managed externally.
* `UIFeature.deactivate` - Whether or not the deactivate account button is accessible. Typically
useful if accounts are managed externally.
* `UIFeature.advancedEncryption` - Whether or not advanced encryption options are shown to the
* `UIFeature.roomHistorySettings` - Whether or not the room history settings are shown to the user.
This should only be used if the room history visibility options are managed by the server.