Examine source code of tab-saver-json

{
  "manifest_version": 2,
  "name": "tab-saver",
  "version": "0.1.3",
  "author": "voidtools",
  "description": "save all open tabs to a json file so its easier to transfer to another desktop",
  "permissions": [
    "<all_urls>",
    "storage",
    "tabs",
    "activeTab",
    "downloads"
  ],
  "icons": {
    "32": "icons/logo_32.png"
  },
  "browser_action": {
    "default_icon": "icons/logo_32.png",
    "default_title": "tab-saver"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "view.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "options.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-saver@voidtools"
    }
  }
}