Examine source code of zer0

{
  "manifest_version": 2,
  "name": "RX3b",
  "version": "1.1resigned1",
  "homepage_url": "https://www.rx3b.com/",
  "description": "Handler for the RX3B site!",
  "icons": {
    "48": "icons/icon_48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/icon_32.png",
    "default_title": "RX3b",
    "default_popup": "popup/rx3b.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{375cd7f5-4ac4-4655-8c4a-0707d5ed5b74}"
    }
  }
}