Examine source code of Clipboard Auto Paster

{
  "manifest_version": 3,
  "name": "Clipboard Auto Paster",
  "version": "1.0",
  "description": "Automatically paste clipboard content into input fields when a webpage is loaded.",
  "permissions": [
    "clipboardRead",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "clipboard_auto_paster@toolsaddon.com"
    }
  }
}