Examine source code of Hidden From Bots

{
  "name": "Hidden From Bots",
  "description": "A encoder from emails and phone numbers to base64.",
  "version": "1.0",
  "manifest_version": 2,
  "homepage_url": "https://hiddenfrombots.js.org/",
  "browser_action": {
    "browser_style": true,
    "default_title": "Hidden From Bots",
    "default_popup": "index.html",
    "default_icon": {
      "19": "icons/hidden19.png",
      "38": "icons/hidden38.png"
    }
  },
  "icons": {
    "48": "icons/hidden.png",
    "96": "icons/hidden@2x.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{64453313-1ff6-4562-9c92-c61c9531eef0}"
    }
  }
}