Examine source code of QuickDrag WE

{
  "manifest_version": 3,
  "name": "QuickDrag WE",
  "version": "8.0.0",
  "description": "ドラッグ＆ドロップジェスチャーの機能を拡張し、選択したURL・テキストのWeb検索、ページ上の画像の保存を可能にします。",
  "icons": {
    "48": "icons/icon_48.png",
    "96": "icons/icon_96.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "cookies",
    "downloads"
  ],
  "action": {
    "default_icon": {
      "48": "icons/icon_48.png",
      "96": "icons/icon_96.png"
    },
    "default_title": "QuickDrag options",
    "default_popup": "options.html"
  },
  "options_ui": {
    "page": "options.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "constants.js",
        "quickdrag.js"
      ],
      "run_at": "document_start",
      "match_about_blank": true,
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{394d28af-d44e-4882-b051-bed7b7d79d7d}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  }
}