Examine source code of PiHole Browser Extension

{
  "manifest_version": 2,
  "name": "PiHole Browser Extension",
  "version": "4.0.4",
  "author": "Pascal Glaser",
  "description": "__MSG_manifest_description__",
  "default_locale": "en",
  "icons": {
    "48": "icon/icon-48.png",
    "96": "icon/icon-96.png",
    "128": "icon/icon-128.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icon/icon-16.png",
      "32": "icon/icon-32.png"
    },
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true,
    "open_in_tab": true
  },
  "background": {
    "persistent": true,
    "page": "background.html"
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "activeTab",
    "contextMenus",
    "alarms"
  ],
  "commands": {
    "hotkey-toggle-pihole": {
      "description": "__MSG_context_menu_toggle_pi_holes__"
    },
    "hotkey-blacklist-current-domain": {
      "description": "__MSG_context_menu_blacklist_current_domain__"
    },
    "hotkey-whitelist-current-domain": {
      "description": "__MSG_context_menu_whitelist_current_domain__"
    },
    "hotkey-open-settings": {
      "description": "__MSG_context_menu_open_settings__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4cc20af-d30a-4758-a799-2089ce45f452}"
    }
  }
}