Examine source code of PhotoSync

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "PhotoSync",
  "version": "1.5.1",
  "description": "Envie fotos dos documentos no Whatsapp e selecione no Sua Receita Digital!",
  "icons": {
    "38": "icons/38.png",
    "64": "icons/64.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.suareceitadigital.com.br/restrito/digitalizar.xhtml*"
      ],
      "js": [
        "script.js"
      ],
      "world": "MAIN"
    }
  ]
}