Examine source code of Element Snapshot

{
  "manifest_version": 2,
  "name": "Element Snapshot",
  "version": "1.3.0",
  "description": "Select, clean, preview, and export a page element as standalone HTML or a portable asset bundle.",
  "developer": {
    "name": "EvickaStudio",
    "url": "https://github.com/EvickaStudio/element-snapshot"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "clipboardWrite"
  ],
  "incognito": "not_allowed",
  "browser_specific_settings": {
    "gecko": {
      "id": "element-snapshot@evickastudio",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Element Snapshot",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_popup": "popup/popup.html"
  }
}