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https://github.com/flutter/flutter

Flutter makes it easy and fast to build beautiful apps for mobile and beyond
https://github.com/flutter/flutter

android app-framework cross-platform dart dart-platform desktop flutter flutter-package fuchsia ios linux-desktop macos material-design mobile mobile-development skia web web-framework windows

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Flutter makes it easy and fast to build beautiful apps for mobile and beyond

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README 

        


  


    

      

      Flutter

    

  





[![Flutter CI Status](https://flutter-dashboard.appspot.com/api/public/build-status-badge?repo=flutter)](https://flutter-dashboard.appspot.com/#/build?repo=flutter)

[![Discord badge][]][Discord instructions]

[![Twitter handle][]][Twitter badge]

[![codecov](https://codecov.io/gh/flutter/flutter/branch/master/graph/badge.svg?token=11yDrJU2M2)](https://codecov.io/gh/flutter/flutter)

[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/5631/badge)](https://bestpractices.coreinfrastructure.org/projects/5631)

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Flutter is Google's SDK for crafting beautiful, fast user experiences for

mobile, web, and desktop from a single codebase. Flutter works with existing

code, is used by developers and organizations around the world, and is free and

open source.



## Documentation



* [Install Flutter](https://flutter.dev/get-started/)

* [Flutter documentation](https://docs.flutter.dev/)

* [Development wiki](./docs/README.md)

* [Contributing to Flutter](https://github.com/flutter/flutter/blob/main/CONTRIBUTING.md)



For announcements about new releases, follow the

[[email protected]](https://groups.google.com/forum/#!forum/flutter-announce)

mailing list. Our documentation also tracks [breaking

changes](https://docs.flutter.dev/release/breaking-changes) across releases.



## Terms of service



The Flutter tool may occasionally download resources from Google servers. By

downloading or using the Flutter SDK, you agree to the Google Terms of Service:

https://policies.google.com/terms



For example, when installed from GitHub (as opposed to from a prepackaged

archive), the Flutter tool will download the Dart SDK from Google servers

immediately when first run, as it is used to execute the `flutter` tool itself.

This will also occur when Flutter is upgraded (e.g. by running the `flutter

upgrade` command).



## About Flutter



We think Flutter will help you create beautiful, fast apps, with a productive,

extensible and open development model, whether you're targeting iOS or Android,

web, Windows, macOS, Linux or embedding it as the UI toolkit for a platform of

your choice.



### Beautiful user experiences



We want to enable designers to deliver their full creative vision without being

forced to water it down due to limitations of the underlying framework.

Flutter's [layered architecture] gives you control over every pixel on the

screen and its powerful compositing capabilities let you overlay and animate

graphics, video, text, and controls without limitation. Flutter includes a full

[set of widgets][widget catalog] that deliver pixel-perfect experiences whether

you're building for iOS ([Cupertino]) or other platforms ([Material]), along with

support for customizing or creating entirely new visual components.



Reflectly hero image



### Fast results



Flutter is fast. It's powered by hardware-accelerated 2D graphics

libraries like [Skia] (which underpins Chrome and Android) and

[Impeller]. We architected Flutter to

support glitch-free, jank-free graphics at the native speed of your device.



Flutter code is powered by the world-class [Dart platform], which enables

compilation to 32-bit and 64-bit ARM machine code for iOS and Android,

JavaScript and WebAssembly for the web, as well as Intel x64 and ARM

for desktop devices.



Dart diagram



### Productive development



Flutter offers [stateful hot reload][Hot reload], allowing you to make changes to your code

and see the results instantly without restarting your app or losing its state.



[![Hot reload animation][]][Hot reload]



### Extensible and open model



Flutter works with any development tool (or none at all), and also includes

editor plug-ins for both [Visual Studio Code] and [IntelliJ / Android Studio].

Flutter provides [tens of thousands of packages][Flutter packages] to speed your

development, regardless of your target platform. And accessing other native code

is easy, with support for both FFI ([on Android][Android FFI], [on iOS][iOS FFI],

[on macOS][macOS FFI], and [on Windows][Windows FFI]) as well as

[platform-specific APIs][platform channels].



Flutter is a fully open-source project, and we welcome contributions.

Information on how to get started can be found in our

[contributor guide](CONTRIBUTING.md).



[flutter.dev]: https://flutter.dev

[Discord instructions]: ./docs/contributing/Chat.md

[Discord badge]: https://img.shields.io/discord/608014603317936148?logo=discord

[Twitter handle]: https://img.shields.io/twitter/follow/flutterdev.svg?style=social&label=Follow

[Twitter badge]: https://twitter.com/intent/follow?screen_name=flutterdev

[layered architecture]: https://docs.flutter.dev/resources/inside-flutter

[architectural overview]: https://docs.flutter.dev/resources/architectural-overview

[widget catalog]: https://flutter.dev/widgets/

[Cupertino]: https://docs.flutter.dev/development/ui/widgets/cupertino

[Material]: https://docs.flutter.dev/development/ui/widgets/material

[Skia]: https://skia.org/

[Dart platform]: https://dart.dev/

[Hot reload animation]: https://github.com/flutter/website/blob/main/src/assets/images/docs/tools/android-studio/hot-reload.gif?raw=true

[Hot reload]: https://docs.flutter.dev/development/tools/hot-reload

[Visual Studio Code]: https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[IntelliJ / Android Studio]: https://plugins.jetbrains.com/plugin/9212-flutter

[Flutter packages]: https://pub.dev/flutter

[Android FFI]: https://docs.flutter.dev/development/platform-integration/android/c-interop

[iOS FFI]: https://docs.flutter.dev/development/platform-integration/ios/c-interop

[macOS FFI]: https://docs.flutter.dev/development/platform-integration/macos/c-interop

[Windows FFI]: https://docs.flutter.dev/development/platform-integration/windows/building#integrating-with-windows

[platform channels]: https://docs.flutter.dev/development/platform-integration/platform-channels

[interop example]: https://github.com/flutter/flutter/tree/main/examples/platform_channel

[Impeller]: https://docs.flutter.dev/perf/impeller