Examine source code of Utils Plugin

{
  "manifest_version": 3,
  "name": "Chrome Utils Plugin",
  "description": "Dev-friendly toolbox (URL formatter, JSON formatter, Cookie tools, …) built with React & Ant Design",
  "version": "1.0.0",
  "icons": {
    "16": "icons/16x16.png",
    "32": "icons/32x32.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "action": {
    "default_title": "Chrome Utils",
    "default_icon": {
      "16": "icons/16x16.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "sidePanel",
    "tabs",
    "cookies",
    "storage",
    "downloads"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "side_panel": {
    "default_path": "sidepanel.html"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; worker-src 'self'; object-src 'self'"
  },
  "sidebar_action": {
    "default_title": "Chrome Utils",
    "default_panel": "sidepanel.html",
    "default_icon": {
      "16": "icons/16x16.png",
      "32": "icons/32x32.png",
      "48": "icons/48x48.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "wujiawen.work@gmail.com",
      "strict_min_version": "58.0"
    }
  }
}