Examine source code of F-list Ads Filter

{
  "manifest_version": 3,
  "name": "F-list Ads Filter",
  "version": "1.0.0",
  "description": "Filter ads on F-list based on gender",
  "action": {
    "default_popup": "popup.html",
    "default_title": "F-list Ads Filter"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.f-list.net/*",
        "*://f-list.net/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "flistadsfilter@bartoshanks"
    }
  }
}