Examine source code of LinkedIn AdBlock

{
  "manifest_version": 3,
  "name": "LinkedIn Cleaner",
  "version": "2.1",
  "description": "Remove anúncios, sugestões, vídeos e conteúdo indesejado do feed ao seu gosto.",
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@linkedin-cleaner.roberta-brandao",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "icons": {
    "96": "icon.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://www.linkedin.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.linkedin.com/*"
      ],
      "js": [
        "storage.js",
        "cleaner.js"
      ],
      "run_at": "document_idle"
    }
  ]
}