How To leverage Flutter for Web App Development?

Flutter- the popular Google UI library has powered 43,140 websites across the globe wherein 0.16% of the websites that falls into the top 1000 websites categories are built using the same framework. Further, the importance of web app development is not something that needs to be stressed upon so when a popular SDK for app development is upgraded to help develop website as well, this is great news for the developers and businesses.

Initially, Flutter was launched to build high-performant, native-like Cross-platform mobile applications, and later, with continuous iterations Flutter capabilities are enhanced to build desktop and web apps using the same codebase. Thus, using Flutter for web has broadened the services that can be catered by following a resilient web development process. Using dart programming language coupled with Material design and Cupertino, the framework enables native-like UI designing.

What is Flutter web?

Flutter web development has two rendering engines- DOMCavas and CanvasKit which gives SDK- complete control over every pixel of the screen with sheer accuracy. All the Flutter UI elements- animation, routing, scrolling, and others are utilized using the same source code.

DomCavas is used by default that combines Canvas API and HTML/JS/CSS to build Flutter widgets. On the other hand, CanvasKit uses WebAssembly and WebGL that allow the browser to avail of hardware acceleration, which in turn, enables the rendering of complex and intensive graphics optimally. However, CanvasKit still has some drawbacks on which the developer community is actively working. Soon, we can expect to see Flutter for the web in a stable version.

The developers can check the Flutter web development performance in two ways- the web app’s ability to render and manipulate massive data and analyze transitions, animation, and effects. Out of the two rendering engines, CanvasKit with a high initial payload and additional bulk size improves Flutter web performance.

The Flutter web app development project is compatible with Flutter 2.2 which you can run in Chrome or Edge. When the development environment is set up, the IDE needs to start, which requires support for various tools. Here are the tools-

  • Visual studio code
  • IntelliJ
  • Android Studio

How does Flutter benefit businesses?

Using Flutter for web app development is an ideal choice for businesses to reap the limitless benefits. The latest Flutter 3.0 release has made the app development better with new additions and modifications, which is a clear signal that flutter app development is here to stay. Dig deeper to know more-

Adaptive design

Flutter is packed with the capability of delivering a customized version of web-based on the operating system that most of the JS frameworks cannot provide. For instance, it enables developers to present the back button and alignment for the header text differently according to OS- Windows and macOS. The same design can also be used to maintain consistency, but the customization enhances the user experience.

Flutter’s adaptiveness for platform-specific behavior is extended for web app development as well. The adaptations are incorporated in 3 ways- auto-adaptation using Flutter widgets, using one variant for all platforms, and leveraging app-level trails for defining various for the particular platform.

Responsive layout

The adaptive designs have worked wonderfully in taking user experience to the next level. Flutter enables responsive design engineering for Flutter web wherein the businesses need to decide on a couple of things such as the same design required for mobile and web that scales visually, the different designs required for web and mobile apps, defining the size at which design expected to scale, and require only a few components that scale on different screen sizes.

There are many Flutter widgets like- MediaQuery, LayoutBuilder, AspectRatio, FittedBox, and others that help in making layout and design resize according to device size. Achieving granular control over the responsive design is feasible with the AutoScale feature that shrinks and expands the layout proportionately while preserving the original UI look and feel.

Incorporate interactive content

Flutter web has made it possible to integrate part of the web app within the existing web app. With the insertion of the Flutter app within HTML div., the entire web app is loaded in the existing web application that needs to be hosted somewhere.

The perfect instances of interactive content that Best Flutter App Development Companies recommend are- adding quizzes or challenges into static content, allowing playing small games, or implementing public dashboards.

Simultaneous development of the mobile app and web app

Separately building a mobile app and then building its web counterparts is a time-consuming and efforts-driven incident. Flutter has made it easier and faster by enabling developers to build mobile and web apps using the same codebase.

The different screen size issues for web and mobile apps are addressed with responsive UI development and adaptive design that makes app appears as if they are built natively for web and mobile platform individually.

Effortless extension from mobile app to web app

Businesses already having mobile apps can extend the app to the web platform effortlessly with the ability to use logic and UI elements while developing web apps. The web apps when used for demo purposes not necessarily need to integrate all the functions of the mobile app. The code reusability makes companion web app development a breeze.

Moreover, making interactive content that’s already available on the mobile end for a web app eliminates the need to develop the same for the web app. It enables web development companies to build and launch the web application in reduced time-to-market.

Flutter web-when to use it and when not?

At this stage, you are pretty convinced with Flutter leverage for high-performant web development, but it’s not a good fit for static web page development with so much text. It signals using Flutter for all types of web development. Businesses need to be very selective in using Flutter depending on the type of web app development project.

When Flutter works like a pro

  • Handle massive data easily
  • Render best animations, transitions, and graphical effects
  • Provides support for progressive web app development. Get to know which is better for your project- PWA or native app development.
  • Execute game engine with high-level animation and physics.
  • Renders the best guidance for using Cupertino and Material design UI elements.
  • Time-savvy and cost-effective approach to web development.

When Flutter is not a good fit

  • Flutter won’t optimize the web app for SEO which makes it unfit for Ecommerce apps.
  • The Flutter web app is improving but still, it doesn’t deliver high performance.
  • Modifying JS/CSS/HTML code is impossible for Flutter developers.
  • Support for Flutter APIs is restricted.
  • Developers cannot use the plugins to their full potential.
  • Weak debugging remains an issue.
  • The smaller community won’t enable developers to get enough assistance.

A few tips to make the most out of Flutter web

When you have decided to move ahead with Flutter web development, it’s a good choice. However, there are a few tactics following which you can make the most out of the Flutter web. They are-

  • The web developer is powered to modify the native code of both iOS and Android apps built using Flutter.
  • When you are using Flutter for the web app, make it responsive so that it performs glitch-free with no resolution issues on all screen sizes.
  • Check the supported platforms twice before you begin coding for Flutter web development.
  • During Flutter web app deployment, run Flutter builds a web that implements all assets needed to build a standalone web archive which is easily hosted by a static web server.

What’s your take? Should you consider Flutter web for web development

Flutter has created endless possibilities for businesses to get advantages of simultaneous web and mobile app development with code reusability or extending the mobile apps to web app counterparts. The growing popularity and benefits appeal the businesses to harness the potential Flutter for web development entirely. At the same time, Google’s developer community is actively working on the framework to eliminate all the cons associated with Flutter web. Still, if you cannot make the decision, reach out to a reliable web development company for the best results.

Frequently Asked Questions

Flutter for the web is essentially leveraging Flutter for PWA and single-page web app development. It’s a code-compatible version of UI SDK that uses HTML, CSS, and JS to generate responsive UI.

It’s an ideal choice to build web apps as a single codebase is shared for multiple platforms that enable web app to perform optimally across range of devices and browsers. 


Avantika Shergil


Avantika Shergil
  |  Nov 25, 2022



An enthusiastic Operations Manager at TopDevelopers.co, coordinating and managing the technical and functional areas. She is an adventure lover, passionate traveler, an admirer of nature, who believes that a cup of coffee is the prime source to feel rejuvenated. Researching and writing about technology keeps her boosted and enhances her professional journeying.




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