Update server.js

server.js

@@ -56,10 +56,11 @@ app.post('/login', async (_req, res) => {
   }
 
   const b64 = out.png.toString('base64');
-  res.json({
+  /* res.json({
     ok: true,
     screenshot_b64: 'data:image/png;base64,' + b64.slice(0),  // ready for <img src=...>
-  });
+  }); */
+  res.type('png').send(out.png);
 });
 
 console.log('🛰️  Public URL will be:', HOSTNAME);