Examine source code of Cite this website

{
  "manifest_version": 2,
  "name": "Cite this website",
  "version": "0.1",
  "description": "Copy a simple citation of the current website into the clipboard",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "19": "icons/19.png",
      "38": "icons/38.png"
    },
    "default_title": "Cite this website",
    "show_matches": [
      "*://*/*"
    ]
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "clipboardWrite"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{859fb69d-497d-47eb-99cf-af8ca6e0565d}"
    }
  }
}