Examine source code of Webcomic Reader

{
  "manifest_version": 2,
  "author": "Gareth Parker",
  "name": "Webcomic Reader",
  "version": "1.0.4",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4fccc0ab-d2e4-45da-ae5e-7956b5e7af0d}"
    }
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "48": "icons/comic.png"
    }
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "contextMenus",
    "tabs",
    "activeTab",
    "privacy"
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "build/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "build/content.js"
      ],
      "run_at": "document_start"
    }
  ]
}