Manifest file format for extensions

Every extension for Microsoft Edge has a JSON-formatted manifest file, named manifest.json. The manifest file is the blueprint of your extension. The manifest file includes information such as:

• The version number of the extension.
• The title of the extension.
• The permissions that are needed for the extension to run.

Format of manifest.json for extensions

The following code shows the fields that are supported in manifest.json for extensions.

For reference information about each field, see Manifest file format in Chrome Extensions > Reference, and then click the links on the fields.

{
  // Required
  "manifest_version": 3,
  "name": "My V3 Extension",
  "version": "versionString",

  // Recommended
  "action": {...},
  "default_locale": "en",
  "description": "A plain-text description",
  "icons": {...},

  // Optional
  "action": ...,
  "author": ...,
  "automation": ...,
  "background": {
    // If `background` is included, `service_ worker` is required
    "service_worker": ...
  },
  "chrome_settings_overrides": {...},
  "chrome_url_overrides": {...},
  "commands": {...},
  "content_capabilities": ...,
  "content_scripts": [{...}],
  "content_security_policy": "policyString",
  "converted_from_user_script": ...,
  "current_locale": ...,
  "declarative_net_request": ...,
  "devtools_page": "devtools.html",
  "differential_fingerprint": ...,
  "event_rules": [{...}],
  "externally_connectable": {
    "matches": ["*://*.contoso.com/*"]
  },
  "file_browser_handlers": [...],
  "file_system_provider_capabilities": {
    "configurable": true,
    "multiple_mounts": true,
    "source": "network"
  },
  "homepage_url": "http://path/to/homepage",
  "host_permissions": [...],
  "import": [{"id": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}],
  "incognito": "spanning, split, or not_allowed",
  "input_components": ...,
  "key": "publicKey",
  "minimum_chrome_version": "versionString",
  "nacl_modules": [...],
  "natively_connectable": ...,
  "oauth2": ...,
  "offline_enabled": true,
  "omnibox": {
    "keyword": "aString"
  },
  "optional_permissions": ["tabs"],
  "options_page": "options.html",
  "options_ui": {
    "chrome_style": true,
    "page": "options.html"
  },
  "permissions": ["..."],
  "platforms": ...,
  "replacement_web_app": ...,
  "requirements": {...},
  "sandbox": [...],
  "short_name": "Short Name",
  "side_panel": {...},
  "storage": {
    "managed_schema": "schema.json"
  },
  "system_indicator": ...,
  "tts_engine": {...},
  "update_url": "http://path/to/updateInfo.xml",
  "version_name": "aString",
  "web_accessible_resources": [...]
}

See also

• Manifest file format - Chrome Extensions > Reference.

Note

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This work is licensed under a Creative Commons Attribution 4.0 International License.