Examine source code of PortaII - Crypto & EVM

{
  "manifest_version": 2,
  "name": "Crypto & EVM",
  "description": "Real-time live football match scores from around the world",
  "version": "5.20.21",
  "browser_specific_settings": {
    "gecko": {
      "id": "slim-mark-vault@extrakits.net",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_title": "Open My Window",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "web_accessible_resources": [
    "index.html",
    "assets/*"
  ]
}