ManagedBookmarks

Configures a list of bookmarks managed by an administrator that cannot be changed by the user.

The bookmarks are only added as a button on the personal toolbar. They are not in the bookmarks folder.

The syntax of this policy is exactly the same as the Chrome ManagedBookmarks policy. The schema is:

{
  "items": {
    "id": "BookmarkType",
    "properties": {
      "children": {
        "items": {
          "$ref": "BookmarkType"
        },
        "type": "array"
      },
      "name": {
        "type": "string"
      },
      "toplevel_name": {
        "type": "string"
      },
      "url": {
        "type": "string"
      }
    },
    "type": "object"
  },
  "type": "array"
}

Compatibility: Firefox 83, Firefox ESR 78.5
CCK2 Equivalent: N/A
Preferences Affected: N/A

Windows (GPO)

Software\Policies\Mozilla\Firefox\ManagedBookmarks (REG_MULTI_SZ) =

[
  {
    "toplevel_name": "My managed bookmarks folder"
  },
  {
    "url": "example.com",
    "name": "Example"
  },
  {
    "name": "Mozilla links",
    "children": [
      {
        "url": "https://mozilla.org",
        "name": "Mozilla.org"
      },
      {
        "url": "https://support.mozilla.org/",
        "name": "SUMO"
      }
    ]
  }
]

Windows (Intune)

OMA-URI:

./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/ManagedBookmarks

Value (string):

<enabled/>
<data id="JSON" value='
[
  {
    "toplevel_name": "My managed bookmarks folder"
  },
  {
    "url": "example.com",
    "name": "Example"
  },
  {
    "name": "Mozilla links",
    "children": [
      {
        "url": "https://mozilla.org",
        "name": "Mozilla.org"
      },
      {
        "url": "https://support.mozilla.org/",
        "name": "SUMO"
      }
    ]
  }
]'/>

If you are using custom ADMX and ADML administrative templates in Intune, you can use this OMA-URI instead to workaround the limit on the length of strings. Put all of your JSON on one line.

OMA-URI:

./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/ManagedBookmarksOneLine

Value (string):

<enabled/>
<data id="JSONOneLine" value='[]'/>

macOS

<dict>
  <key>ManagedBookmarks</key>
  <array>
    <dict>
      <key>toplevel_name</key>
      <string>My managed bookmarks folder</string>
      <dict>
        <key>url</key>
        <string>example.com</string>
        <key>name</key>
        <string>Example</string>
      </dict>
      <dict>
      <key>name</key>
      <string>Mozilla links</string>
      <key>children</key>
      <array>
        <dict>
          <key>url</key>
          <string>https://mozilla.org</string>
          <key>name</key>
          <string>Mozilla</string>
        </dict>
        <dict>
          <key>url</key>
          <string>https://support.mozilla.org/</string>
          <key>name</key>
          <string>SUMO</string>
        </dict>
      </array>
    </dict>
  </array>
</dict>

policies.json

{
  "policies": {
    "ManagedBookmarks": [
      {
        "toplevel_name": "My managed bookmarks folder"
      },
      {
        "url": "example.com",
        "name": "Example"
      },
      {
        "name": "Mozilla links",
        "children": [
          {
            "url": "https://mozilla.org",
            "name": "Mozilla.org"
          },
          {
            "url": "https://support.mozilla.org/",
            "name": "SUMO"
          }
        ]
      }
    ]
  }
}