How to Remove the Debug (or Slow Mode) Banner

Last reviewed by Frank Treacy
with Flutter 1.7.8

Removing the DEBUG banner from the top-right corner is very straightforward.

Simply turn off debugShowCheckedModeBanner as shown below:

// lib/main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(   // or CupertinoApp
      title: 'My Flutter App',
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          title: Text('Welcome to Flutter Igniter!'),
        ),
        body: Center(
          child: Text('Hello World'),
        ),
      ),
    );
  }
}

And this is how it looks now. No banner!

screenshot

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