Important: Chrome will be removing support for Chrome Apps on Windows, Mac, and Linux. Chrome OS will continue to support Chrome Apps. Additionally, Chrome and the Web Store will continue to support extensions on all platforms. Read the announcement and learn more about migrating your app.

Manifest File Format

Every app has a JSON-formatted manifest file, named manifest.json, that provides important information.

Field summary

The following code shows the supported manifest fields for Apps, with links to the page that discusses each field.

{
  // Required
  "app": {
    "background": {
      // Optional
      "scripts": ["background.js"]
    }
  },
  "manifest_version": 2,
  "name": "My App",
  "version": "versionString",

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

  // Optional
  "author": ...,
  "automation": ...,
  "bluetooth": {
    "uuids": ["1105", "1006"]
  },
  "commands": {...},
  "current_locale": ...,
  "event_rules": [{...}],
  "externally_connectable": {
    "matches": ["*://*.example.com/*"]
  },
  "file_handlers": {...},
  "file_system_provider_capabilities": {
    "configurable": true,
    "multiple_mounts": true,
    "source": "network"
  },
  "import": [{"id": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}],
  "key": "publicKey",
  "kiosk": {
    "required_platform_version": ...
  },
  "kiosk_enabled": true,
  "kiosk_only": true,
  "kiosk_secondary_apps": ...,
  "minimum_chrome_version": "versionString",
  "nacl_modules": [...],
  "oauth2": ...,
  "offline_enabled": true,
  "optional_permissions": ["tabs"],
  "permissions": ["tabs"],
  "platforms": ...,
  "requirements": {...},
  "sandbox": [...],
  "short_name": "Short Name",
  "signature": ...,
  "sockets": {
    "tcp": {
      "connect": "*"
    },
    "udp": {
      "send": "*"
    }
  },
  "storage": {
    "managed_schema": "schema.json"
  },
  "system_indicator": ...,
  "update_url": "http://path/to/updateInfo.xml",
  "url_handlers": {...},
  "usb_printers": {
    "filters": [...]
  },
  "version_name": "aString",
  "webview": {...}
}