Examine source code of Autosave8n

{
  "name": "Autosave8n",
  "manifest_version": 2,
  "version": "0.2.1",
  "icons": {
    "64": "image/logo.png"
  },
  "description": "Autosave for N8N",
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "64": "image/logo.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "autosave8n.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "animation.gif"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "autosave8n@devitbash.com"
    }
  }
}