Examine source code of Sputnik

{
  "manifest_version": 2,
  "name": "Sputnik",
  "description": "OSINT web extension",
  "version": "1.32",
  "icons": {
    "48": "icons/logo_48.png"
  },
  "permissions": [
    "clipboardWrite",
    "contextMenus",
    "menus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{78eea43d-42ab-4410-98b9-de9d50ddb1a3}"
    }
  }
}