Examine source code of DiscreetTab

{
  "manifest_version": 3,
  "name": "DiscreetTab",
  "version": "1.3.4",
  "description": "Hides the favicon and the title of the website in the browser tab.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "webNavigation",
    "contextMenus",
    "alarms"
  ],
  "options_page": "options.html",
  "host_permissions": [
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Ctrl+Shift+S to toggle",
    "default_icon": "DiscreetTab_Logo_128x128.png",
    "default_popup": "popup.html"
  },
  "commands": {
    "toggle-discreet": {
      "suggested_key": {
        "default": "Ctrl+Shift+S"
      },
      "description": "Toggle DiscreetTab mode for current tab"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3f1c2e1a-1a4d-41d2-8b87-3d79f7f9d6ab}",
      "strict_min_version": "126.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}