Examine source code of FoxFilter

{
  "name": "FoxFilter",
  "short_name": "FoxFilter",
  "version": "11.0",
  "manifest_version": 3,
  "description": "Easy-to-use content filter that blocks websites and keywords, with optional protection designed to stay in place.",
  "browser_specific_settings": {
    "gecko": {
      "id": "foxfilter@inspiredeffect.net",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {},
    "safari": {
      "id": "foxfilter@inspiredeffect.net"
    }
  },
  "icons": {
    "16": "images/logo16.png",
    "48": "images/logo48.png",
    "128": "images/logo128.png"
  },
  "options_ui": {
    "page": "html/settings.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "js/ext/helpers.js",
      "js/ext/contextMenu.js",
      "js/ext/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/ext/contentscript.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "permissions": [
    "tabs",
    "contextMenus",
    "storage",
    "management"
  ]
}