Examine source code of ForgeData

{
  "manifest_version": 2,
  "name": "ForgeData",
  "description": "Exporta y analiza datos de Forge of Empires. Genera Excel de eficiencia militar. Multilanguage support.",
  "version": "1.4.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "downloads",
    "storage",
    "*://*.forgeofempires.com/*"
  ],
  "web_accessible_resources": [
    "lib/xlsx.mini.min.js",
    "lang/*.json"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "forgedata@onosenday",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "browser_action": {
    "default_title": "ForgeData",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.forgeofempires.com/*"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content-scripts/interceptor.js"
      ],
      "world": "MAIN"
    }
  ]
}