noizapp/main.js

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

let zoomLevel = 0;
const MIN_ZOOM = -5;
const MAX_ZOOM = 5;

function createWindow() {
  const win = new BrowserWindow({
    width: 1200,
    height: 800,
    webPreferences: {
      preload: __dirname + '/preload.js',
    },
  });
  win.loadURL('https://bsd.pm/noiz/');

  ipcMain.on('zoom-in', () => {
    if (zoomLevel < MAX_ZOOM) {
      zoomLevel += 1;
      win.webContents.setZoomLevel(zoomLevel);
    }
  });

  ipcMain.on('zoom-out', () => {
    if (zoomLevel > MIN_ZOOM) {
      zoomLevel -= 1;
      win.webContents.setZoomLevel(zoomLevel);
    }
  });

  ipcMain.on('zoom-reset', () => {
    zoomLevel = 0;
    win.webContents.setZoomLevel(0);
  });
}

Menu.setApplicationMenu(null);
app.whenReady().then(createWindow);