Examine source code of Link Share Shortener

{
  "manifest_version": 2,
  "name": "Link Share Shortener",
  "version": "1.0.0",
  "description": "Shorten the current page URL and copy it to share.",
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ],
  "icons": {
    "48": "icons/chain-48.png",
    "96": "icons/chain-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sgoodyssarti@outlook.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_title": "Link Shortener",
    "default_popup": "share/shorten-panel.html",
    "default_icon": {
      "48": "icons/chain-48.png",
      "96": "icons/chain-96.png"
    }
  }
}