Examine source code of Webpage Screenshot Tool

{
  "name": "__MSG_extensionName__",
  "short_name": "__MSG_extensionName__",
  "version": "4.0.3",
  "manifest_version": 3,
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "<all_urls>",
    "pageCapture",
    "tabs",
    "downloads",
    "activeTab",
    "storage",
    "scripting"
  ],
  "content_security_policy": {},
  "action": {
    "default_icon": "images/icon-128.png",
    "default_title": "__MSG_appLauncher__",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "host_permissions": [
    "http://*/",
    "https://*/",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "service-worker.dist.js"
    ]
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      }
    }
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e7d3b0a7-3f3c-0d1e-1c0f-5b9f72dfb2ac}"
    }
  }
}