Examine source code of Remember-Tabs

{
  "manifest_version" : 3 ,
  "name" : "Tab Sticky Notes 📝",
  "version" : "1.1",
  "description" : "Add sticky notes to your tabs to remember why you opened them and stay organized!",
  "permissions" : [
    "activeTab" ,
    "storage" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "content.js" 
      ],
      "css" : [
        "styles.css" 
      ]
    }
  ],
  "action" : {
    "default_popup" : "popup.html",
    "default_title" : "Tab Sticky Notes"
  },
  "icons" : {
    "16" : "icon16.png",
    "48" : "icon48.png",
    "128" : "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-sticky-notes@example.com"
    }
  }
}