Examine source code of ToChunkA Smart Tabs

{
  "manifest_version": 2,
  "name": "ToChunkA Smart Tabs",
  "description": "Organizes a heap of tabs and bookmarks in a smart - easy to read way.",
  "version": "0.60",
  "developer": {
    "name": "Alex Go @ ToChunkA",
    "url": "https://tochunka.com/#solutions"
  },
  "icons": {
    "48": "img/smarttabs_48.png",
    "96": "img/smarttabs_96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "smarttabs@tochunka.com",
      "strict_min_version": "77.0"
    }
  },
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "Readability.js",
      "common.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.min.js",
        "Readability.js",
        "common.js",
        "content.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.htm",
    "browser_style": true
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "activeTab",
    "contextMenus",
    "storage",
    "notifications"
  ],
  "optional_permissions": [
    "bookmarks"
  ],
  "incognito": "not_allowed",
  "commands": {
    "on_demand_tab_sort": {
      "suggested_key": {
        "default": "Alt+G"
      },
      "description": "Tab sort on demand."
    },
    "move_to_read_later_bookmarks": {
      "suggested_key": {
        "default": "Alt+R"
      },
      "description": "Move highlighted tabs to read later bookmarks."
    }
  }
}