Examine source code of Helix Tab

{
  "applications": {
    "gecko": {
      "id": "addon@helix-search.com"
    }
  },
  "browser_action": {
    "default_icon": "icons/helix-tab.jpg",
    "default_title": "New Tab - Helix Tab"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "description": "Helix Tab - Take your browser up a notch",
  "homepage_url": "https://helix-tab.com/",
  "icons": {
    "128": "icons/helix-tab-128x128.jpg"
  },
  "manifest_version": 2,
  "name": "Helix Tab",
  "short_name": "Helix Tab",
  "version": "1.0.4"
}