Examine source code of LinkFeed Pro

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "1.1.3",
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://linkfeed.pro/*",
    "https://extension.report/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "cedric@linkfeed.pro",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "privacy_policy_url": "https://linkfeed.pro/privacy",
  "homepage_url": "https://linkfeed.pro",
  "action": {
    "default_icon": {
      "16": "icon-16.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    },
    "default_title": "LinkFeed Pro Settings",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}