Examine source code of Microslop Replacer

{
  "manifest_version": 3,
  "name": "Microslop Replacer",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "microslop@luckyluk",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "description": "Replaces 'Microsoft' with 'Microslop' on all websites.",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "icons": {
    "32": "icons/icon32.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ]
}