Examine source code of Vertical Marks

{
  "manifest_version": 2,
  "name": "Vertical Marks",
  "version": "1.3",
  "description": "Advanced sidebar bookmark manager.",
  "browser_specific_settings": {
    "gecko": {
      "id": "headan.tools@outlook.com.tr",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "bookmarks",
    "storage",
    "tabs"
  ],
  "sidebar_action": {
    "default_panel": "sidebar.html",
    "default_title": "Vertical Marks",
    "open_at_install": true
  },
  "browser_action": {
    "default_title": "Vertical Marks",
    "default_popup": "sidebar.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "MacCtrl+Shift+F"
      }
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+Shift+S",
        "mac": "Alt+Shift+S"
      }
    }
  },
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  }
}