Examine source code of LinkedReply

{
  "manifest_version": 3,
  "name": "LinkedReply",
  "version": "1.0",
  "permissions": [
    "<all_urls>"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "ragaslagnad28@gmail.com",
      "strict_min_version": "42.0"
    }
  }
}