Examine source code of Save URL

{
  "manifest_version": 3,
  "name": "Save URL",
  "version": "1.4",
  "description": "A simple extension",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "action": {
    "default_popup": "index.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "vedaaant40404@gmail.com",
      "strict_min_version": "42.0"
    }
  }
}