/core/modules/system/config/schema/system.schema.yml

# Schema for the configuration files of the System module.

system.site:
  type: mapping
  label: 'Site information'
  mapping:
    uuid:
      type: string
      label: 'Site UUID'
    name:
      type: label
      label: 'Site name'
    mail:
      type: email
      label: 'E-mail address'
    slogan:
      type: label
      label: 'Slogan'
    page:
      type: mapping
      label: 'Pages'
      mapping:
        403:
          type: path
          label: 'Default 403 (access denied) page'
        404:
          type: path
          label: 'Default 404 (not found) page'
        front:
          type: path
          label: 'Default front page'
    admin_compact_mode:
      type: boolean
      label: 'Compact mode'
    weight_select_max:
      type: integer
      label: 'Weight element maximum value'
    langcode:
      type: string
      label: 'Default language'

system.maintenance:
  type: mapping
  label: 'Maintenance mode'
  mapping:
    message:
      type: text
      label: 'Message to display when in maintenance mode'
    langcode:
      type: string
      label: 'Default language'

system.authorize:
  type: mapping
  label: 'Authorize settings'
  mapping:
    filetransfer_default:
      type: string
      label: 'Default file transfer protocol'

system.cron:
  type: mapping
  label: 'Cron settings'
  mapping:
    threshold:
      type: mapping
      label: 'Thresholds'
      mapping:
        autorun:
          type: integer
          label: 'Run cron every'
        requirements_warning:
          type: integer
          label: 'Requirements warning period'
        requirements_error:
          type: integer
          label: 'Requirements error period'

system.date:
  type: mapping
  label: 'Date settings'
  mapping:
    first_day:
      type: integer
      label: 'First day of week'
    country:
      type: mapping
      label: 'Country'
      mapping:
        default:
          type: string
          label: 'Default country'
    langcode:
      type: string
      label: 'Default language'
    timezone:
      type: mapping
      label: 'Time zone settings'
      mapping:
        default:
          type: string
          label: 'Default time zone'
        user:
          type: mapping
          label: 'User'
          mapping:
            configurable:
              type: boolean
              label: 'Users may set their own time zone'
            default:
              type: integer
              label: 'Time zone for new users'
            warn:
              type: boolean
              label: 'Remind users at login if their time zone is not set'

system.date_format.*:
  type: mapping
  label: 'Date format'
  mapping:
    id:
      type: string
      label: 'Date format identifier'
    uuid:
      type: string
      label: 'UUID'
    label:
      type: label
      label: 'Date format label'
    status:
      type: boolean
      label: 'Enabled'
    locked:
      type: boolean
      label: 'Locked'
    pattern:
      type: mapping
      label: 'Format string'
      mapping:
        php:
          type: date_format
          label: 'PHP date format'
        intl:
          type: string
          label: 'Intl date format'
    langcode:
      type: string
      label: 'Default language'

system.fast_404:
  type: mapping
  label: 'Fast 404 settings'
  mapping:
    enabled:
      type: boolean
      label: 'Enabled'
    paths:
      type: string
      label: 'Paths'
    exclude_paths:
      type: string
      label: 'Exclude paths'
    html:
      type: string
      label: 'HTML'

system.filter:
  type: mapping
  label: 'Filter settings'
  mapping:
    protocols:
      type: sequence
      label: 'Allowed protocols'
      sequence:
        - type: string
          label: 'Protocol'

system.logging:
  type: mapping
  label: 'Logging settings'
  mapping:
    error_level:
      type: string
      label: 'Error messages to display'

system.menu:
  type: mapping
  label: 'Menu settings'
  mapping:
    active_menus_default:
      type: sequence
      label: 'Active menus'
      sequence:
        - type: string
          label: 'Menu'

system.performance:
  type: mapping
  label: 'Performance settings'
  mapping:
    cache:
      type: mapping
      label: 'Caching'
      mapping:
        page:
          type: mapping
          label: 'Page cache'
          mapping:
            use_internal:
              type: boolean
              label: 'Use internal page cache'
            max_age:
              type: integer
              label: 'Max age of page cache'
    css:
      type: mapping
      label: 'CSS performance settings'
      mapping:
        preprocess:
          type: boolean
          label: 'Aggregate CSS files'
        gzip:
          type: boolean
          label: 'Compress CSS files'
    fast_404:
      type: mapping
      label: 'Fast 404 settings'
      mapping:
        enabled:
          type: boolean
          label: 'Fast 404 enabled'
        paths:
          type: string
          label: 'Regular expression to match'
        exclude_paths:
          type: string
          label: 'Regular expression to not match'
        html:
          type: string
          label: 'Fast 404 page html'
    js:
      type: mapping
      label: 'JavaScript performance settings'
      mapping:
        preprocess:
          type: boolean
          label: 'JavaScript preprocess'
        gzip:
          type: boolean
          label: 'Compress JavaScript files.'
    response:
      type: mapping
      label: 'Response performance settings'
      mapping:
        gzip:
          type: boolean
          label: 'Compress cached pages'
    stale_file_threshold:
      type: integer
      label: 'Stale file threshold'

system.rss:
  type: mapping
  label: 'Feed settings'
  mapping:
    channel:
      type: mapping
      label: 'Feed channel'
      mapping:
        description:
          type: text
          label: 'Feed description'
    items:
      type: mapping
      label: 'Feed items'
      mapping:
        limit:
          type: integer
          label: 'Feed item limit'
        view_mode:
          type: string
          label: 'Feed content'
    langcode:
      type: string
      label: 'Default language'

system.theme:
  type: mapping
  label: 'Theme settings'
  mapping:
    admin:
      type: string
      label: 'Administration theme'
    enabled:
      type: sequence
      label: 'Enabled themes'
      sequence:
        - type: integer
          label: 'Weight'
    default:
      type: string
      label: 'Default theme'

system.menu.*:
  type: mapping
  label: 'Menu'
  mapping:
    id:
      type: string
      label: 'Menu identifier'
    uuid:
      type: string
      label: 'UUID'
    label:
      type: label
      label: 'Menu label'
    description:
      type: label
      label: 'Menu description'
    langcode:
      type: string
      label: 'Default language'
    locked:
      type: boolean
      label: ''
    status:
      type: boolean
      label: ''

system.action.*:
  type: mapping
  label: 'System action'
  mapping:
    id:
      type: string
      label: 'ID'
    uuid:
      type: string
      label: 'UUID'
    label:
      type: label
      label: 'Label'
    status:
      type: boolean
      label: 'Status'
    langcode:
      type: string
      label: 'Default language'
    type:
      type: string
      label: 'Type'
    plugin:
      type: string
      label: 'Plugin'
    configuration:
      type: action.configuration.[plugin]

system.file:
  type: mapping
  label: 'File system'
  mapping:
    allow_insecure_uploads:
      type: boolean
      label: 'Allow insecure uploads'
    default_scheme:
      type: string
      label: 'Default download method'
    path:
      type: mapping
      label: 'Path settings'
      mapping:
        private:
          type: string
          label: 'Private file system path'
        temporary:
          type: string
          label: 'Temporary directory'

system.image:
  type: mapping
  label: 'Image settings'
  mapping:
    toolkit:
      type: string
      label: 'Toolkit'

system.image.gd:
  type: mapping
  label: 'Image settings'
  mapping:
    jpeg_quality:
      type: integer
      label: 'JPEG quality'

system.mail:
  type: mapping
  label: 'Image settings'
  mapping:
    interface:
      type: mapping
      label: 'Interface'
      mapping:
        default:
          type: string
          label: 'Default'

system.module:
  type: mapping
  label: 'Module settings'
  mapping:
    enabled:
      type: sequence
      label: 'Enabled modules'
      sequence:
        - type: integer
          label: 'Weight'

system.theme.global:
  type: mapping
  label: 'Theme global settings'
  mapping:
    favicon:
      type: mapping
      label: 'Shortcut icon settings'
      mapping:
        mimetype:
          type: string
          label: 'MIME type'
        path:
          type: string
          label: 'Path'
        url:
          type: string
          label: 'URL'
        use_default:
          type: boolean
          label: 'Use the default shortcut icon supplied by the theme'
    features:
      type: mapping
      label: 'Shortcut icon settings'
      mapping:
        comment_user_picture:
          type: boolean
          label: 'User pictures in comments'
        comment_user_verification:
          type: boolean
          label: 'User verification status in comments'
        favicon:
          type: boolean
          label: 'Shortcut icon'
        logo:
          type: boolean
          label: 'Logo'
        name:
          type: boolean
          label: 'Site name'
        node_user_picture:
          type: boolean
          label: 'User pictures in posts'
        main_menu:
          type: boolean
          label: 'Main menu'
        secondary_menu:
          type: boolean
          label: 'Secondary menu'
        slogan:
          type: boolean
          label: 'Site slogan'
    logo:
      type: mapping
      label: 'Shortcut icon settings'
      mapping:
        path:
          type: string
          label: 'Logo path'
        url:
          type: uri
          label: 'URL'
        use_default:
          type: boolean
          label: 'Use default'

system.theme.disabled:
  type: sequence
  label: 'Disabled themes'
  sequence:
    - type: string
      label: 'Theme'