Launches in app Browser
import { InAppBrowser } from '@ionic-native/in-app-browser';
constructor(private iab: InAppBrowser) { }
...
const browser = this.iab.create('https://ionicframework.com/');
browser.executeScript(...);
browser.insertCSS(...);
browser.on('loadstop').subscribe(event => {
browser.insertCSS({ code: "body{color: red;" });
});
browser.close();