Examine source code of Export Tabvtrs URLs

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "version": "0.2.12",
  "default_locale": "en_US",
  "icons": {
    "16": "img/icon.svg",
    "48": "img/icon.svg",
    "128": "img/icon.svg"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "img/icon.svg",
    "default_title": "__MSG_appButtonDesc__",
    "default_popup": "popup/popup.html",
    "theme_icons": [
      {
        "light": "img/icon_dark-theme.svg",
        "dark": "img/icon.svg",
        "size": 16
      },
      {
        "light": "img/icon_dark-theme.svg",
        "dark": "img/icon.svg",
        "size": 32
      }
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "permissions": [
    "clipboardWrite",
    "notifications",
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{4cc86a48-ffa1-43ed-8562-f0b38c2584fb}"
    }
  }
}