Examine source code of Easy Tabs

{
  "manifest_version": 2,
  "name": "Easy Tabs",
  "author": "morilon",
  "description": "Copy, paste and group your tabs easily for whatever reason.",
  "developer": {
    "name": "morilon",
    "url": "https://github.com/morilon/extensions-easy-tabs"
  },
  "version": "0.0.2",
  "icons": {
    "64": "icons/icon.png"
  },
  "permissions": [
    "menus",
    "tabs",
    "clipboardWrite",
    "clipboardRead"
  ],
  "background": {
    "scripts": [
      "background_script.js"
    ]
  },
  "options_ui": {
    "page": "options/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{452a3579-1bf6-4e88-abf6-8f954e51b9cf}"
    }
  }
}