Examine source code of Bulk Image Saver

{
  "manifest_version": 2,
  "name": "Bulk Image Saver",
  "version": "5.6.4",
  "description": "Preview grid, select what you want, save numbered files into a per-page folder.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f7829c2-3fbb-4cfe-9550-a87677662d93}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "32": "assets/icon32.png",
    "48": "assets/icon48.png",
    "64": "assets/icon64.png",
    "96": "assets/icon96.png",
    "128": "assets/icon128.png"
  },
  "permissions": [
    "activeTab",
    "downloads",
    "storage",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_popup": "app/popup.html",
    "default_title": "Bulk Image Saver",
    "default_icon": {
      "32": "assets/icon32.png",
      "48": "assets/icon48.png",
      "64": "assets/icon64.png",
      "96": "assets/icon96.png",
      "128": "assets/icon128.png"
    }
  },
  "web_accessible_resources": [
    "app/core.js",
    "app/collect.js"
  ]
}