Examine source code of TabReload

{
  "manifest_version": 2,
  "name": "TabReload",
  "version": "3.1",
  "description": "Automatische Tab-Aktualisierung mit individuellem Timer pro URL",
  "author": "Ben Halking",
  "browser_specific_settings": {
    "gecko": {
      "id": "b.halking@me.com",
      "strict_min_version": "140.0"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "TabReload",
    "default_icon": {
      "16": "reload16.png",
      "32": "reload32.png",
      "48": "reload48.png"
    }
  },
  "icons": {
    "16": "reload16.png",
    "32": "reload32.png",
    "48": "reload48.png",
    "96": "reload96.png"
  }
}