Font rendering check

main.js

const {app, BrowserWindow} = require('electron')

let mainWindow

function createWindow () {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: false
    }
  })

  mainWindow.loadURL('http://roettsch.es/raster72a.html');
}

app.on('ready', createWindow)

app.on('window-all-closed', function () {
  app.quit()
})