Examine source code of Secret Bookmarks

{
  "manifest_version": 3,
  "name": "Secret Bookmarks",
  "version": "1.0",
  "developer": {
    "name": "Alex Conticello",
    "url": "https://github.com/acont95"
  },
  "description": "Encrypt selected bookmarks folders",
  "icons": {
    "48": "public/images/book-lock.svg"
  },
  "options_ui": {
    "page": "public/html/options.html"
  },
  "permissions": [
    "bookmarks",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "secret-bookmarks@org.ac.com"
    }
  },
  "action": {
    "default_area": "navbar",
    "default_popup": "public/html/popup.html",
    "default_icon": {
      "16": "public/images/book-lock-outline.svg",
      "32": "public/images/book-lock-outline.svg"
    },
    "theme_icons": [
      {
        "light": "public/images/book-lock-outline-light.svg",
        "dark": "public/images/book-lock-outline.svg",
        "size": 16
      },
      {
        "light": "public/images/book-lock-outline-light.svg",
        "dark": "public/images/book-lock-outline.svg",
        "size": 32
      }
    ]
  },
  "background": {
    "scripts": [
      "public/js/background-script.js"
    ],
    "type": "module"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L"
      }
    }
  }
}