Examine source code of Lens New Tab

{
  "name": "Lens",
  "short_name": "Lens",
  "description": "Lens replaces your new tab page with gorgeous HD images from Unsplash.",
  "version": "1.0.3resigned1",
  "homepage_url": "http://sidhant.io/",
  "icons": {
    "48": "data/img/lens_96.png",
    "64": "data/img/lens_96.png",
    "96": "data/img/lens_96.png"
  },
  "chrome_url_overrides": {
    "newtab": "data/newtab.html"
  },
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "data/markup/preferences.html",
    "open_in_tab": false,
    "browser_style": false
  },
  "applications": {
    "gecko": {
      "strict_min_version": "54.0",
      "id": "{db2e0b1b-a061-4e0c-84a5-d67f253f1c41}"
    }
  },
  "developer": {
    "name": "Sidhant Sharma [:tk]",
    "url": "http://sidhant.io"
  },
  "manifest_version": 2
}