Examine source code of IIIF to CWorld

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "0.6",
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "default_locale": "en",
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "iiif2cworld@mprove.de",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}