MySizer: Size Calculator for Shopping

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "MySizer: Size Calculator for Shopping",
  "description": "Introducing MySizer, the tool that helps you find your perfect fit size while shopping!",
  "version": "1.0.3",
  "action": {
    "default_popup": "popup.html",
    "default_title": "MySizer - Size Calculator",
    "default_icon": "128.png"
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "16.png",
    "48": "48.png",
    "128": "128.png"
  },
  "options_page": "options.html",
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.shein.com/*",
        "*://www.amazon.com/*",
        "*://www.daraz.pk/*",
        "*://www.next.us/*",
        "*://www.ebay.com/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ]
}