Examine source code of Face Shape Detector

{
  "manifest_version": 3,
  "name": "Face Shape Detector",
  "version": "2.2",
  "description": "Upload your photo and analyze your face shape with AI.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "help@whatismyfaceshape.net",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}