Examine source code of vtelca-addons

{
  "manifest_version": 2,
  "name": "Vtelca",
  "version": "1.2.2resigned1",
  "author": "David E Luna M",
  "description": "Visitar aplicaciones Web de Vtelca",
  "homepage_url": "http://lunamontilla.esy.es/",
  "applications": {
    "gecko": {
      "id": "davidlunamontilla@gmail.com",
      "strict_min_version": "57.0"
    }
  },
  "icons": {
    "32": "/imagen/png/favicon-32.png",
    "48": "/imagen/png/favicon-48.png",
    "64": "/imagen/png/favicon-64.png",
    "128": "/imagen/png/favicon-128.png",
    "256": "/imagen/png/favicon-256.png"
  },
  "browser_action": {
    "default_title": "VTELCA",
    "default_icon": "/imagen/favicon.svg",
    "default_popup": "index.html"
  },
  "short_name": "VTELCA"
}