Examine source code of ZIP Writer

{
  "version": "0.1.9",
  "name": "ZIP Writer",
  "manifest_version": 2,
  "offline_enabled": true,
  "optional_permissions": [
    "downloads"
  ],
  "homepage_url": "https://mybrowseraddon.com/zip-maker.html",
  "description": "Create zip files via an easy-to-use UI right in your browser!",
  "commands": {
    "_execute_browser_action": {}
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "browser_action": {
    "default_title": "ZIP Writer",
    "default_icon": {
      "16": "data/icons/16.png",
      "32": "data/icons/32.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{85c1673e-b16f-49d0-9d14-f098a7113572}"
    }
  }
}