Examine source code of Page Shortcuts

{
  "manifest_version": 3,
  "name": "Page Shortcuts",
  "version": "1.0.2",
  "description": "Inject custom keyboard shortcuts into any webpage",
  "license": "MIT",
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.svg",
      "32": "icons/icon-32.svg"
    },
    "default_popup": "popup.html",
    "default_title": "Page Shortcuts"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{60ad6479-d9ff-43b5-9177-a9828fe236d9}"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    {
      "resources": [
        "shortcuts.json"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}