Examine source code of Franspose

{
  "manifest_version": 3,
  "name": "Franspose",
  "version": "1.0.0",
  "description": "Transpose pitch and playback speed for video and audio in the page, with transport controls.",
  "author": "o61iqz",
  "permissions": [
    "storage",
    "activeTab",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_title": "Franspose",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "settings/settings.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/vendor/signalsmith-stretch.js",
        "content/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "content/vendor/signalsmith-stretch.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "franspose@o61iqz.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}