Adjust Screen Brightness for Browser

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "background": {
    "service_worker": "/js/bg-worker.js"
  },
  "content_scripts": [
    {
      "css": [
        "mystyles.css"
      ],
      "js": [
        "jquery-1.10.1.min.js",
        "contentscript.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_end"
    }
  ],
  "default_locale": "en",
  "description": "__MSG_application_description__",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png",
    "512": "icons/icon-512.png"
  },
  "manifest_version": 3,
  "name": "__MSG_application_title__",
  "permissions": [
    "tabs",
    "storage"
  ],
  "version": "3.0.0",
  "action": {
    "default_icon": "icons/icon-32.png",
    "default_popup": "popup.html"
  },
  "homepage_url": "https://adjust-screen-brightness.freebusinessapps.net"
}