Examine source code of Send To QNAP++

{
  "manifest_version": 2,
  "name": "Send To QNAP++",
  "version": "2.95.6",
  "description": "Send Downloads to QNAP Download Station and Monitor Progress",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "@sendtoqnapplusplus",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/16_download.png",
    "32": "icons/32_download.png",
    "48": "icons/48_download.png",
    "64": "icons/64_download.png",
    "96": "icons/96_download.png",
    "128": "icons/128_download.png"
  },
  "options_ui": {
    "page": "options/backup_restore.html",
    "open_in_tab": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+Q"
      },
      "description": "Open Send To QNAP++"
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "contextMenus",
    "storage",
    "notifications",
    "downloads",
    "cookies",
    "webNavigation",
    "http://*/",
    "https://*/"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/16_download.png",
      "32": "icons/32_download.png",
      "48": "icons/48_download.png"
    },
    "default_title": "Send To QNAP++",
    "default_popup": "popup/Configure_QNAP_Access.html"
  },
  "background": {
    "scripts": [
      "common.js",
      "SendLink.js"
    ]
  }
}