Examine source code of Startpagina.nl: nieuws, weer, verkeer en meer

{
  "name": "Startpagina.nl: nieuws, weer, verkeer en meer",
  "short_name": "Startpagina",
  "description": "Voeg Startpagina.nl toe aan je browser en heb direct toegang tot het laatste nieuws, weer, voordeel, spelletjes en leuke verhalen.",
  "version": "1.1",
  "manifest_version": 2,
  "omnibox": {
    "keyword": "zoek"
  },
  "page_action": {
    "default_icon": {
      "16": "/images/startpagina_16.png",
      "32": "/images/startpagina_32.png",
      "48": "/images/startpagina_48.png",
      "128": "/images/startpagina_128.png"
    }
  },
  "chrome_settings_overrides": {
    "homepage": "https://www.startpagina.nl/?origin=browserplugin",
    "search_provider": {
      "name": "Startgoogle",
      "search_url": "https://startgoogle.startpagina.nl/?ts=ts1&origin=browserplugin&query={searchTerms}",
      "keyword": "start",
      "favicon_url": "https://static.startpagina.nl/static/app-shell/images/icons/favicon.ico",
      "is_default": true,
      "encoding": "UTF-8"
    }
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "icons": {
    "16": "/images/startpagina_16.png",
    "32": "/images/startpagina_32.png",
    "48": "/images/startpagina_48.png",
    "128": "/images/startpagina_128.png"
  },
  "permissions": [
    "scripting",
    "tabs",
    "search",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "browserSettings",
    "cookies",
    "history",
    "menus"
  ],
  "applications": {
    "edge": {
      "browser_action_next_to_addressbar": true
    },
    "gecko": {
      "strict_min_version": "69.0",
      "id": "{7fa7e0ea-653f-4a8c-9473-6affd8fcf90b}"
    }
  },
  "browser_action": {
    "browser_style": false,
    "default_area": "navbar",
    "default_icon": "images/logo.png",
    "default_title": "Startpagina"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+T"
      }
    }
  }
}