Examine source code of Everyone-GM-chess.com

{
  "manifest_version": 3,
  "name": "Everyone-GM-chess.com",
  "version": "1.0",
  "description": "Everyone is a Grand Master of Chess in their heart",
  "content_scripts": [
    {
      "matches": [
        "*://*.chess.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "Everyone-GM-chess.com@hasselassel.github.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "128": "icon-128.png"
  }
}