Examine source code of Bookmark Keep

{
  "manifest_version": 3,
  "name": "__MSG_manifest_name__",
  "version": "1.3.0",
  "description": "__MSG_manifest_description__",
  "default_locale": "en_US",
  "permissions": [
    "bookmarks",
    "storage",
    "tabs"
  ],
  "sidebar_action": {
    "default_title": "__MSG_manifest_sidebar_title__",
    "default_panel": "sidebar.html"
  },
  "action": {
    "default_title": "__MSG_manifest_default_title__",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "commands": {
    "open-sidebar": {
      "suggested_key": {
        "default": "Ctrl+Shift+K",
        "mac": "Command+Shift+K"
      },
      "description": "__MSG_manifest_command_openSidebar__"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox@bookmarkkeep.app",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}