Examine source code of Bookmark Customizer

{
  "manifest_version": 3,
  "name": "__MSG_ext_name__",
  "description": "__MSG_ext_desc__",
  "version": "6.6.0",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "action": {
    "default_title": "__MSG_default_title__"
  },
  "permissions": [
    "scripting",
    "bookmarks",
    "storage",
    "unlimitedStorage",
    "tabs",
    "notifications",
    "contextMenus"
  ],
  "host_permissions": [
    "https://google.com/*"
  ],
  "optional_permissions": [
    "clipboardRead"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{176190d2-ddb7-19bb-1055-bc1d5420e820}",
      "strict_min_version": "128.0"
    }
  }
}