Examine source code of ⚉ CopyScan

{
  "description": "Select text. Right-click. Query web.",
  "manifest_version": 2,
  "name": "⚉ CopyScan",
  "version": "21.11.21",
  "applications": {
    "gecko": {
      "id": "copyscan@birdy1976.com"
    }
  },
  "homepage_url": "https://b76.ch/about/",
  "icons": {
    "48": "icons/icon0-48.png"
  },
  "background": {
    "scripts": [
      "searchbot.js"
    ]
  },
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "48": "icons/icon0-48.png"
    },
    "default_title": "⚉ CopyScan"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "tabs",
    "*://*/*"
  ]
}