Examine source code of JSaw Puzzle

{
  "action": {
    "default_icon": {
      "16": "/images/icon-16.png",
      "64": "/images/icon-64.png",
      "128": "/images/icon-128.png"
    }
  },
  "author": "Raymond Hill",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jsawpuzzle@raymondhill.net",
      "strict_min_version": "125.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "default_locale": "en",
  "description": "__MSG_extShortDesc__",
  "host_permissions": [
    "https://commons.wikimedia.org/*",
    "https://*.publicdomainpictures.net/*"
  ],
  "icons": {
    "16": "/images/icon-16.png",
    "64": "/images/icon-64.png",
    "128": "/images/icon-128.png"
  },
  "manifest_version": 3,
  "name": "JSaw Puzzle",
  "options_ui": {
    "page": "jsawpuzzle.html",
    "open_in_tab": true
  },
  "permissions": [
    "contextMenus",
    "storage"
  ],
  "version": "1.11"
}