Examine source code of Novelupdates Extension

{
  "manifest_version": 3,
  "name": "NovelUpdates AI Recommendations",
  "version": "1.0",
  "description": "A browser extension that adds a recommendations to novelupdates.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "addon2@safayet.me"
    },
    "safari": {
      "id": "addon2@safayet.me"
    },
    "gecko_android": {
      "id": "addon2@safayet.me"
    }
  },
  "host_permissions": [
    "https://www.novelupdates.com/",
    "https://shhossain.pythonanywhere.com/"
  ],
  "permissions": [
    "storage",
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.novelupdates.com/series/*"
      ],
      "js": [
        "series.js"
      ]
    },
    {
      "matches": [
        "https://www.novelupdates.com/viewlist/*"
      ],
      "js": [
        "viewlist.js"
      ]
    }
  ]
}