Examine source code of Shortcuts Creator

{
  "manifest_version": 3,
  "name": "Shortcuts",
  "version": "1.1.0",
  "description": "Create shortcuts for any website",
  "icons": {
    "48": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "shortcuts.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "shortcut-creator.html",
        "shortcut-creator.css",
        "shortcut-creator.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+Q"
      }
    },
    "pick_element": {
      "suggested_key": {
        "default": "Alt+Q"
      },
      "description": "Select an element to create a shortcut for"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "browser_shortcuts_manager@tonystr.net",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}