Speed Up Flutter Web Startup: Split main.dart.js with Deferred Components

This article explains how to reduce Flutter Web startup time by splitting the bulky main.dart.js file using deferred components, configuring CanvasKit assets via CDN, and optimizing font loading, complete with step‑by‑step code examples and performance measurements.

CDNCode SplittingDeferred Components

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Speed Up Flutter Web Startup: Split main.dart.js with Deferred Components

Sohu Tech Products

Jul 17, 2024 · Frontend Development

Optimizing Flutter Web Startup: main.dart.js Splitting, CanvasKit Loading, and Font Loading Optimization

By splitting the main.dart.js bundle with deferred components, serving CanvasKit assets and Google fonts from a private CDN, and optionally using the HTML renderer during development, Flutter Web apps can cut their startup time by five to six seconds, achieving sub‑second load performance.

CDNCanvasKitDeferred Components

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Optimizing Flutter Web Startup: main.dart.js Splitting, CanvasKit Loading, and Font Loading Optimization

JD Tech

Jun 22, 2022 · Mobile Development

Implementing Flutter Deferred Components without Google Play: Official Scheme and Custom Demo

This article explains the official Flutter Deferred Components implementation, explores its limitations in China, and provides a step‑by‑step custom solution with code examples that enables dynamic Dart code delivery without relying on Google Play, complete with local verification instructions.

AndroidDeferred ComponentsDynamic Delivery

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Implementing Flutter Deferred Components without Google Play: Official Scheme and Custom Demo