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Why Is My Flutter App So Big? Tips to Reduce Flutter App Size

Trushit Kasodiya
6 min readJan 17, 2025

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Understanding and optimizing Flutter app size for better performance.

Table of Contents

  1. Introduction: Understanding Flutter App Size
  2. Why is My Flutter App So Big?
  3. How Flutter’s Structure Affects App Size
  4. The Role of Assets in Flutter App Size
  5. Minimizing Code and Dependencies in Flutter Apps
  6. Techniques to Reduce Flutter App Size
  7. Conclusion: Achieving a Smaller Flutter App Size
  8. FAQs About Flutter App Size

Introduction: Understanding Flutter App Size

When I first started using Flutter, I was amazed at how quickly I could build apps that worked on both Android and iOS. But one thing puzzled me: why is my Flutter app so big? After all, I was only building a simple app, yet the size was surprisingly large. If you’re like me and wondering the same thing, you’re not alone. Flutter apps often have larger sizes compared to native apps, especially for beginners.

Let’s dive into why this happens and how you can manage your Flutter app size effectively.

Why is My Flutter App So Big?

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Trushit Kasodiya
Trushit Kasodiya

Written by Trushit Kasodiya

Flutter Developer with 4 years of experience in building mobile and web apps. Skilled in React Native, Firebase, Java, and Figma. Passionate problem-solver.

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