Flutter performance issues 10. Apr 19, 2020 · For flutter however we could do something similar or perhaps something entirely different, my point being that it will definitely not be trivial and might even require every user to optimise somewhat for their usecase. Step 1 Jan 20, 2025 · Welcome back, folks! It's Toxigon here, and today we're diving deep into the world of Flutter performance profiling as we stand in 2025. Before diving into optimization techniques, it’s essential to understand the two primary performance areas in Flutter: UI Thread (Rendering Performance): Handles the rendering of widgets, animations, and layouts. NET ? Flutter has tons of drawbacks, compose multiplatform fixes all cross platform issues, it’s just the matter of flutter devs focus on improving compose and ditch flutter, the problem of flutter devs is that they’re like BTS stans, they defend the framework by their soul and deny any drawback of flutter, compose multiplatform is built on KMM When using provider, I'm wondering if there are any issues binding multiple levels of the subtree to a parent value. Things like not selectable Text like the Author mentions just show that he does not really know what he is talking about. 27 update, I noticed that my phone gets very hot during debugging. Sep 14, 2021 · a: text input Entering text in a text field or keyboard related problems c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 2. Here I have a large li Feb 7, 2025 · Steps to reproduce. Flutter GitHub: The Flutter GitHub repository. 0. They correspond to the four labels that are used in the Flutter GitHub issue database: “ perf: speed ”, “ perf: memory ”, “ perf: app size ”, “ perf: energy ”. Additionally, finding Flutter packages that work for desktop is challenging, according to Sep 5, 2023 · Flutter Performance Monitor: A third-party tool for real-time performance monitoring. 20 Found to occur in 3. 13 Found to occur in 2. If you opened the PedidosYa application at the beginning of 2021, you probably got frustrated Mar 7, 2012 · Steps to reproduce Install 3. Compared to other development methods, the Flutter application’s APK size is larger. Jan 8, 2025 · Steps to reproduce When running a Flutter app with Impeller on a Galaxy Tab 7 Lite (Android 14), the performance is really bad. 1 Oct 13, 2022 · c: performance Relates to speed or footprint issues (see "perf:" labels) p: maps Google Maps plugin P2 Important issues not at the top of the work list package flutter/packages repository. The problem is that the data insertion takes too long time and this cause the app crash since the operation stacks at the main thread until they finish it. Jun 7, 2021 · Today I ran into some performance issue when I used my image gallery app on a folder of 17k images. Jan 16, 2025 · 1. 6 Devices: iPhone 11 Pro Max Logs flutter doctor -v [ ] Flutter (Channel stable, 3. Here’s how you can profile and… Feb 12, 2020 · You can use Flutter profiling tools to determine the performance and determine performance problems in your application, you can find more useful details in the following link about Flutter performance profiling. How much does the performance drop as compared to apps written in Java or . Flutter provides a suite of tools and resources that are invaluable for diagnosing and solving performance issues. Here I have a large li Sep 14, 2021 · a: text input Entering text in a text field or keyboard related problems c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 2. 8. I use the flutter_animate package for animations, and I have a button with a shimmer effect. 3. I’m using a rotation animation that during the execution continuously switch between two svg files. 19 found in release: 3. Rendering stutters, crashes, rendering glitches. Apr 30, 2025 · In this story, let’s deep dive into the tools, techniques, and real-world practices for profiling performance in Flutter so you can ship apps that feel buttery smooth — on every device. Mar 11, 2024 · If you only experience performance issues on desktop, the problem might lie in the site implementation or Flutter's own limitations (personally, I haven't encountered performance issues). Terrible PageView performance. Identify and fix issues in your code while debugging. Flutter DevTools: Use DevTools to monitor widget rebuilds, track memory usage, and diagnose CPU performance issues. Jan 18, 2024 · Use Flutter DevTools to measure the frame rendering time and identify performance issues Conclusion In conclusion, Flutter app development requires a performant and high-quality consideration of Flutter transforms the entire app development process. Apr 4, 2024 · Here, the scope was intentionally broadened to include performance issues other than just app performance issues because they can share many tools regardless of who the performers are. Related questions. 22 Found to occur in 3. Avoid these errors to build robust applications. There are a number of methods you may employ to optimize widget rebuilding in Flutter in order Jul 13, 2021 · The described tools are rather complicated, so we recommend using them when you’ve already checked all the simple aspects, but still have problems with the performance of the app. May 20, 2023 · c: performance Relates to speed or footprint issues (see "perf:" labels) d: devtools DevTools related - suite of performance and debugging tools P2 Important issues not at the top of the work list waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds will need additional (Alternatively, you can check the Flutter GitHub issue database using the performance label. Flutter Gems is also a visual alternative to pub. Flutter performance monitoring involves collecting and analyzing an app’s behavior, resource usage, and user behavior data. ) Dec 19, 2024 · Rendering animations in your app is one of the most cited topics of interest when it comes to measuring performance. Understanding Flutter’s Performance Bottlenecks. Suppose you have a screen with flutter animation or some gif going on and you open a dialog with another flutter file running,the screen will render a lot in this case as two animations are running. And this is the area where performance gets the hit by a good margin, if not managed correctly. 13. ) Finally, the performance issues are divided into four categories. See also e: labels. Jan 5, 2024 · Flutter is constantly being developed and updated, which means new and better features. Jul 2, 2022 · flutter performance issues when focus textformfield. If you are facing similar issues, try these steps and I hope they help! If you are facing similar issues, try these steps and I hope they help! Nov 16, 2021 · It would be more useful to break down the list of issues uncovered by this benchmark into individual Github issues. If you are facing similar issues, try these steps and I hope they help! If you are facing similar issues, try these steps and I hope they help! Apr 9, 2019 · flutter is way more faster than its current competitives like react native or ionic or whatever. See also t: labels. However, I find that it is performing fine when running the Flutter 3. Basically, these are the things I wish someone told me when I just started using Flutter. Mar 11, 2024 · Even if Flutter app development is among the greatest frameworks for cross-platform development, there’s a chance that employing the framework can cause performance problems. Use a code Flutter was going to be our choice until we noticed problems with IOS performance. Mar 1, 2019 · For performance bottlenecks in Flutter itself, filing an issue that includes reduced test cases and a Timeline trace make it easy to identify, cross reference, and prioritize specific tasks that Mar 11, 2025 · 🚨 Common Flutter Performance Issues. dependency: dart Dart team may need to help us perf: speed Performance issues related to (mostly rendering) speed tool Affects the "flutter" command-line tool. Scrolling in listview,builder is Jun 5, 2023 · Use Dart’s built-in Profile and Release modes for testing performance Use Dart’s built-in “Profile” and “Release” modes for testing performance. As per the doc, it. Mar 24, 2022 · No performance issues at all. . 5 Found to occur in 2. dart:ffi being 200x slower than js->canvas sounds suspicious, I'd like to investigate. Mar 26, 2023 · Performance problems such as jerky animations and unresponsive user interfaces may result from this. I understand that it can be janky in debug mode but it is more noticeably janky in Flutter 3. Nov 16, 2021 · It would be more useful to break down the list of issues uncovered by this benchmark into individual Github issues. Top 5 Flutter Performance Issues Likely to Face. See full list on geeksforgeeks. f: scrolling Viewports, list views, slivers, etc. Aug 1, 2018 · Aerodynamic instabilities of super long-span bridges have always been the essential issue in design and construction, especially during the deck erection process. Maui's approach "should" be able to approach the performance of a native app. found in release: 2. Release build is much more faster than debug build. I have models of Event Recurrence EventPlace which have the relationship in each. Flutter Gems is a curated list of Dart & Flutter packages that are categorized based on functionality. has reproducible steps The issue has been confirmed reproducible and is ready to work on P2 Important issues not at the top of the work list perf: energy Performance issues related to energy use (power, watts) perf: speed Performance issues related to (mostly rendering) speed r: fixed Issue is closed as already fixed in a Feb 21, 2024 · c: performance Relates to speed or footprint issues (see "perf:" labels) f: scrolling Viewports, list views, slivers, etc. Developing in native would not be optimal from a business perspective, given the market we would access by also having Android, and as a team of 2 Apr 9, 2021 · Now I'm in a trouble with the performance issue of ObjectBox in Flutter. Mar 6, 2025 · Flutter Documentation: The official Flutter documentation. We cannot address them all at once. Probably the files are a little bit complex (76kb) but I need to find a method to improve the performance. To avoid such bad performance issues, you can use CounterWidget, which helps develop animation without rebuilding the entire widget tree. 0. Apr 30, 2024 · Profiling and analyzing performance issues in Flutter apps is crucial for identifying bottlenecks, optimizing resource usage, and ensuring a smooth user experience. 3 performance issue in drawing using flutter Jun 17, 2022 · Hello! I am trying to use external map in my app through webview, but scrolling actions causing a performance problems. See my video recorded on a Xiaomi Redmi Note 8 Pro in profile mode as proof. We can't find many big apps made all in flutter and the ones that are (Hamilton or McDonald reward page) are laggy. However, given that it is apparently up to the keyboard installed by the user to decide what it wants to show for a InputType. May 14, 2021 · performance issue in drawing using flutter. 6 on channel stable Apr 16, 2023 · One of the most common issues that developers face in Flutter is state management. Flutter DevTools is a suite of performance monitoring and debugging tools for Flutter developers. For example: MainView - Provides Foo - SubView1 - binds to foo - SubView1_1 - binds to foo - LeafNode1 - binds to foo Is this going to cause multiple rebuilds or performance concerns? Oct 3, 2024 · In the rapidly evolving world of mobile app development, performance is a critical factor that can make or break user experience. You can continue execution, step into functions, and inspect the call stack. Jul 24, 2020 · I tried using Listview and Sliverlist, but the performance of my list is very slow. Analyzed the performance using Lighthouse on a physical mobile device running Chrome, accessed via chrome://inspect/#devices. Neither will ever have as small a memory footprint as a natively coded app. Screenshots or recordings of any visible issues. and removed from: performance template Issues created via a performance issue template labels Feb 25, 2020 Nov 13, 2024 · It only occurs on debug mode. Mar 28, 2024 · This guide will arm you with the top tools to pinpoint bottlenecks, analyze rendering issues, and fine-tune your app, ensuring it provides that delightful user experience Flutter promises. When building a Flutter app, you may run into various issues, from minor bugs to major performance problems. When I swipe through the pages slowly, and wait for the scrolling animation to finish, everything is smooth. all cross-platforms have performance issues but between them, flutter is the fastest. Flutter performance issue with Lottie animation. Jun 29, 2024 · This article offers comprehensive strategies to identify and resolve performance issues in Flutter applications, ensuring smooth animations and responsive UI interactions by maintaining a frame May 9, 2018 · Debug build has some performance issues, as many asserts and other validations happen in release build. Profile mode gives you detailed performance information, Release mode optimizes the app for performance and speed, this will help you to identify and fix performance issues. In external browser this html works fine without critical performance issues. Generally, Flutter applications are performant by default, so you only need to avoid common pitfalls to get excellent performance. May 11, 2023 · Details My App using GestureDetector to move widgets, but it lags & missing frames causing UX bad I made two simple samples to check this issue: a. c: proposal A detailed proposal for a change to Flutter perf: speed Performance issues related to (mostly rendering) speed P1 High-priority issues at the top of the work list team-framework Owned by Framework team triaged-framework Triaged by Framework team labels Jul 11, 2023 Mar 8, 2020 · This is the major bug in flutter, a very clear performance mirror as compared to react-native. Build, test, and deploy beautiful mobile, web, desktop, and embedded apps from a single codebase. TYPE_CLASS_DATETIME keyboard, it would probably be best to err on the conservative side and go with the full default keyboard for the date pickers and expose the keyboardType as a parameter so that Apr 8, 2025 · Nearly 60% of mobile devs in a 2023 Stack Overflow poll reported app performance problems; Flutter-specific concerns like rebuilds and state management were on the rise. Jul 18, 2019 · It's working, but the performance is bad and causing a lag of ~ one second when pressing the button to open the page. Performance is one of the most crucial factors that determine the success of a mobile app. #1 from here. Diagnoses app performance issues occurring on your users’ devices. So I decided to use the Flutter profiler for the first time. 1: Use smaller image files: No doubt, images are essential for any mobile application. 0 version on Impeller mode, which I just learned from the issue template when submitting this issue. Below I attached a screenshot of the performance analysis, which shows, that all widgets inside the sheet are beeing constantly rebuilt while the user is dragging. Jan 11, 2022 · performance issue in drawing using flutter. If you're a Flutter developer looking to optimize your apps, you're in the right place. Test Setup and Observations: I hosted a dummy Flutter web application on this URL without using the --web-renderer html flag. Nov 20, 2021 · ListView. An export of the performance trace. Dec 15, 2024 · After the Flutter 3. May 10, 2021 · The Flutter web team says that for the moment HTML documents are better for (dressing) large bodies of text than dressing with the Flutter Widget framework, Flutter excel at programmatic apps. 0 compared to our previous Flutter version 3. This solution helped improve the performance of my app and prevented errors related to the ListView when disabling shrinkWrap. Doctor summary (to see all details, run flutter May 16, 2024 · c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 3. Based on the Xihoumen Bridge, this paper presents a particular insight into the flutter performance of a mega-bridge with a central-slotted box girder while in construction. Update : Don't use GetX for overall production-level projects. Thanks in part to Flutter's Skia engine and its ability to quickly create and dispose of widgets, Flutter applications are performant by default, so you only need to avoid common pitfalls to achieve excellent performance. 10. Keeping current with 2025's best practices is now required rather than voluntary. I clearly not recommending the package as it is been made issues over production, but you can use for minimizing code in some parts, Navigation or in your personal projects. of(context). dev Sep 17, 2021 · When I try to scroll through those pages quickly, I get terrible janks/performance issues. Other issues should be filed separately. As I am working on a larg application and I worried about performance issue, becuase I need a supper fast app. 10 Laggy animation. I found out the problem is caused by an animation. 8. Performance Profiling. Ask Question Asked 2 years, 9 months ago. The app performance can also be measured with Flutter performance benchmark tests, which are done via integration testing. So I have a large amount of text & pictures & animations, which would benefit from HTML's dressing & flexibility, but there are elements I want to program. Make sure you are always using the most current version for the best performance. Use flutter_lints to enforce code style and quality guidelines, which indirectly contribute to better performance and maintainability. Zip the file and attach it to the May 23, 2019 · How to boost flutter performance and speed up our application. There are advantages and disadvantages to the two approaches. Flutter pdf generation too slow with image. These issues occur across various animations, such as routing transitions, UI updates, and even simple widget animations. 22 to 3. Flutter vertical scrolling specially with images have jerking issues. Flutter doesn’t separate the business and interface layers, which means you may be unable to apply your existing learning curve to develop these apps. Nov 7, 2021 · 2. Cross-platform has a cost. If not handled properly, state management can lead to bugs and performance issues. 10 found in release: 2. Running app in release build may help. Sep 17, 2021 · When I try to scroll through those pages quickly, I get terrible janks/performance issues. Flutter Linter: A package for enforcing coding standards. sizeOf(context) the reason is that some properties (other than size) of MediaQuery change when the keyboard is open and close and its trigger unnecessary build. It displays CPU, memory, and FPS statistics on the device screen. Performance profiling is crucial for ensuring that your Flutter app runs smoothly across a variety of devices and use cases. Jun 11, 2020 · See also e: labels. 6 framework flutter/packages/flutter repository. As developers increasingly turn to Flutter for its powerful UI capabilities and cross-platform potential, understanding how to optimize app performance has never been more essential. perf: speed Performance issues related to (mostly rendering) speed engine flutter/engine repository. 5. – Benyamin Commented Aug 27, 2021 at 15:07 Dec 23, 2024 · 1. Preferring using stateful widgets with pages using textformfield even it have GetX. 0 for flutter take a bit more complex lottie file Actual results Under 3. 19 Found to occur in 3. When the app's state changes, it can lead to a chain of rebuilds in the widgets tree. Part 2: Profiling Flutter Apps. Apr 22, 2025 · That’s the common reason for poor Flutter performance. 4 Animation is slow in flutter. May 8, 2021 · Hey! Yes, we want dart:ffi to provide good performance. widget only changes position, flutter performance has some peak but is acceptable with ey May 5, 2023 · Flutter Web WASM is set to be out later in 2023 (Google IO?) [1] and should fix the performance issues. Jan 25, 2024 · However, the optimizer flagged it for causing a performance issue. Initially this is no issue but with a growing number of list items the app Flutter 提供多种性能分析工具。以下是其中几种： The Performance Overlay: Displays a simplified set of metrics directly within your running app. It helps you track and fix issues in Flutter comes with several performance-analysis tools built in, such as the Dart Observatory or the Flutter's Performance tab. Common mistakes in Flutter app development can hinder performance, cause UI inconsistencies, and complicate code maintenance. Monitoring Flutter App Performance. Mar 21, 2019 · c: performance Relates to speed or footprint issues (see "perf:" labels) f: scrolling Viewports, list views, slivers, etc. 6 Found to occur in 2. The Performance View: A web-based interface that connects to your app and displays detailed performance metrics. Mar 9, 2023 · Troubleshooting And Debugging Your Flutter App are critical skills for any developer and are especially important in mobile app development. Scrolling is fine and smooth. To solve this problem, Flutter provides the Key class, which can be used to assign a unique identity to a widget that persists even if the widget tree is modified. 22 has reproducible steps The issue has been confirmed reproducible and is ready to work on P3 Issues that are less important to the Flutter project perf: speed Performance issues related to (mostly rendering) speed platform May 23, 2019 · How to boost flutter performance and speed up our application. Jul 11, 2023 · See also f: labels. Dec 12, 2022 · This resulted in the lowest user satisfaction while debugging performance issues and deploying the app. See also p: labels. Some users, who built apps on Flutter noticed performance issues after the update. Lots of jank. Viewed 231 times May 7, 2025 · This issue isn't to do with scroll performance. Janky Animations: Dropped frames during transitions or scrolls. Problems involving time when something takes too long or requires the gadget to run faster, the device’s speed will increase. The performance drop is due to the fact, that all previous items are also built until the initialScrollOffset is reached. 6. Jul 21, 2023 · Performance issues with Impeller. found in release: 1. flutter run Nov 22, 2024 · 8. For example, Flutter app performance and infra performance might share the same dashboard and similar alert mechanisms. 22 has reproducible steps The issue has been confirmed reproducible and is ready to work on P3 Issues that are less important to the Flutter project perf: speed Performance issues related to (mostly rendering) speed platform Apr 10, 2025 · Prefix the issue title with [Impeller] and include a small reproducible test case. builder() comes in very handy by creating the widgets on demand. When I update the loop for render to 50000, I get flutter: render cost: 18 on an iPod Touch 2015, both in debug and release mode. However, when it comes to developing mobile apps with Flutter, performance issues can sometimes arise, impacting the overall quality of the application. You can monitor the performance of your app in real-time and find issues like excessive CPU use, frame rate slowdowns, or memory leaks. Both Maui and Flutter improve their "tuning" each year. Pay attention: when i tap on zoom in/out buttons there is no performance drops. flutter pub global activate devtools flutter pub global run devtools. Slow App Startup: 5-second splash screens? No thanks. Mar 11, 2025 · This can cause unexpected behavior and can lead to performance issues. Feel free to reach out for expert guidance tailored to your needs May 9, 2022 · Flutter apps are very performant if some of the performance optimisations are kept in mind while developing the apps. Benchmark. May 16, 2019 · a: images Loading, displaying, rendering images c: performance Relates to speed or footprint issues (see "perf:" labels) customer: crowd Affects or could affect many people, though not necessarily a specific customer. passed first triage perf: speed Performance issues related to (mostly rendering) speed c: performance Relates to speed or footprint issues (see "perf:" labels) c: rendering UI glitches reported at the engine/skia or impeller rendering level and removed from: performance template Issues created via a performance issue The performance issue in drawing app using flutter is resolved by using drawPath() and instead of using setState for each points to update use NotifyListener() to refresh than it will be more efficient than setState. Avoid The Build() Method. It is a free, open-source project developed by the Flutter team, and it provides developers with a graphical user interface (GUI) to visualize the performance and behavior of their Flutter apps. I wouldn't say the bridge is a thing of the past, when we speak about Flutter performance I think it has to do with machine code compilation rather than the architecture itself, because the bridge and Flutter's channels are in fact the same solution, asynchronous serialized message sending through a pub sub system. Feb 10, 2025 · App performance encompasses various aspects, from raw speed and I/O throughput to the smoothness of the user interface. 7 found in release: 3. Dec 24, 2019 · c: performance Relates to speed or footprint issues (see "perf:" labels) customer: crowd Affects or could affect many people, though not necessarily a specific customer. The tests show such metrics as Apr 14, 2020 · Hello, I am using flutter web view in my app and its a crucial part of my app. Dec 12, 2022 · Now, let’s get to know about some of the key Flutter app performance issues. 13 has reproducible steps The issue has been confirmed reproducible and is ready to work on P2 Important issues not at the top of the work list perf: speed Performance issues related to (mostly rendering) speed platform-android Android Jan 16, 2025 · When the Flutter UI component is released, the UI-related memory is freed. Flutter provides several tools and libraries to help developers identify and resolve performance issues. Nov 5, 2022 · How to fix common performance issues in Flutter This article is a compilation of tips and tricks regarding performance of Flutter applications. Please include the following information when submitting an issue for Impeller: The device you are running on, including the chip information. Use traces to monitor the performance of specific parts See also f: labels. For performance details on creating more than one FlutterEngine, see multiple Flutters. However, like any development platform, Flutter apps can encounter performance issues, bugs, and crashes that need debugging. Must Read: Flutter Project Ideas Aug 17, 2023 · Details Target Platform: iOS Target OS version/browser: 16. Jan 25, 2021 · Then you can check with Flutter performance profiling The overlay should always be viewed in profile mode, since debug mode performance is intentionally sacrificed in exchange for expensive asserts that are intended to aid development, and thus the results are misleading. As for the exact performance issue pointed out by this issue something like solution 1 of @Peng-Qian sounds possible to me I'm pretty new to Flutter app development and most of my experience is in developing mobile apps. Jul 6, 2024 · There is a list of Frequently asked questions, so you can find out if the questions you have or the problems you're having were already answered or encountered, and whether there are existing solutions. Anybody some thoughts about the slow Nov 10, 2023 · Hey guys, so with the new Project Suggestions feature, I'm getting warnings about shrink wrap on lists not being performant. here is an example app on playstore (Flutter demo: CINEMA) you can download and test, but that i am sure its flutter bug because all similar apps or with long list views this happens. builder() allows us to create children dynamically as the user scrolls, contrary to ListView and Column that, instead, create all the children in one go. I wrote a little demo to compare the performance of the two types of Sep 27, 2024 · Flutter, Google’s open-source UI software development toolkit, has gained popularity for its ability to build natively compiled applications for mobile, web, and desktop from a single codebase. To address this, I placed the ListView in a Container with a fixed height to turn off shrink wrap. Jun 21, 2021 · I have a flutter app where user can add items to a list which are stored in firebase. flutter doctor. Feb 12, 2025 · Types of Flutter Performance Issues. This optimization gains importance as we deal with long lists of children: we don't need to render items that are not in the view, therefore ListView. flutter run --release Feb 3, 2019 · I’m also having some performance issue with load from assets. To view the performance data, including the widget rebuild information, start the app in Debug mode, and then open the Performance tool window using View > Tool Windows > Flutter Performance . There are two sorts of time and space-related Flutter Performance Issues. 10 Found to occur in 3. ) There is a second scenario where the performance is heavily impacted and I think flutter core has to do something in this. Flutter offers several tools for performance analysis. 9. 24. 5 found in release: 2. 10 framework flutter/packages/flutter repository. This can affect the app's performance and lead to lag and jank. Does anyone know why, and how bad it is? May 6, 2025 · Flutter provides several built-in performance analysis tools, including the Dart Observatory and the Flutter Performance tab in the DevTools. Even if the Items are loaded from the internet, the scrolling is very slow. Check out the agenda for this year's Google I/O! Feb 25, 2020 · See also f: labels. – Benyamin Commented Aug 27, 2021 at 15:07 Nov 5, 2024 · As a software development company, we understand the importance of creating high-performance applications that provide a seamless user experience. Here are some of the most common performance issues with Flutter development. Oct 30, 2024 · Flutter DevTools. Jul 24, 2024 · The framework already offers multiple performance optimization tools. It’s particularly useful for profiling apps and identifying performance bottlenecks. But, I want to create an app for desktop devices so I wanted to know how performant Flutter apps are, when they run on desktops. While this page primarily focuses on UI smoothness (lack of stutter or jank), the tools described here can often be used to diagnose other performance issues as well. This doesn't affect the Flutter state, which lives in the FlutterEngine (unless the FlutterEngine is also released). Modified 2 years, 9 months ago. Apr 9, 2019 · flutter is way more faster than its current competitives like react native or ionic or whatever. Flutter Performance Best Practices: Flutter’s official performance best practices. Performance optimisation issues. These tools allow you to monitor your app’s performance in real time and identify issues such as excessive CPU usage, slow frame rates, and memory leaks. Mar 22, 2022 · See also e: labels. Dec 12, 2024 · c: performance Relates to speed or footprint issues (see "perf:" labels) e: device-specific Only manifests on certain devices e: impeller Impeller rendering backend issues and features requests engine flutter/engine repository. 10 Found to occur in 2. (Alternatively, you can check the Flutter GitHub issue database using the performance label. Flutter performance profiling. 5 22G74 darwin-x64, locale ru-RU) • Flutter version 3. found in release: 3. This overlay provides real-time information about widget rebuilds, frame rate, and build times, allowing you to visualize performance issues directly within the app itself. 4. Apr 24, 2024 · FAQs on Performance Optimization in Flutter Apps What is the Performance View in Flutter DevTools used for? The Performance View in Flutter DevTools is utilized for debugging performance issues in Flutter apps. I will deduplicate this issue with #76248 as it seems the biggest contributor. 7 Found to occur in 3. 6, on macOS 13. How to measure Flutter performance? Measuring Flutter Performance involves assessing the speed and efficiency of a Flutter app. Sep 20, 2023 · Stuck on a complex performance issue? Our team at FlutterDude specializes in Flutter app development and performance tuning. Step 5: Fix Issues. Significant Flutter Performance Issues. Flutter performance and memory usage. Flutter DevTools. In DevTools, you can visualize your widget rebuilds, analyze memory usage, and identify potential performance bottlenecks. also check this link for more information and details about performance best practices. I have build big Flutter Web Apps and Performance was the only real issue, hope it is improved soon. For example, Flutter DevTools offers a visual and easy way of inspecting and analyzing an application. Part of the DevTools Sep 27, 2018 · c: performance Relates to speed or footprint issues (see "perf:" labels) f: scrolling Viewports, list views, slivers, etc. size to MediaQuery. org Feb 24, 2025 · flutter analyze and flutter_lints: Use flutter analyze to check your code for static analysis issues and ensure you are following best practices. Subsequently, I replaced the Column with a ListView, but the optimizer warned that using shrinkWrap: true on the ListView could lead to performance issues. 20 framework flutter/packages/flutter repository. It provides insights into various performance metrics and helps identify areas that need optimization. Avoiding the use of the Build() method is one of the important Flutter performance optimization tips you should consider. Apr 2, 2023 · Why is the issue of performance in an Application so important? Let’s see the example of PedidosYa. High Memory Usage: Apps crashing on Jul 12, 2024 · I have been struggling with the same issue of yours and this is how I handled it: first, replace all MediaQuery. engine flutter/engine repository. 24, our team got report from some users about animation stutters, frame drops. Let’s look at each of them individually, starting with the time-related concerns. User can add up to 1000 items at once. 16+ flutter Install newest lottie 3. Flutter DevTools is a powerful suite of performance tools. 7. This can help developers to spot performance issues. open pdf file from assets flutter. Some people are saying that the issue found only on simulators. To learn more, see the sections in this topic. Jul 28, 2020 · It certainly looks like this is mostly a problem with Samsung devices. Jan 17, 2025 · To learn how to use the Performance View (part of Flutter DevTools) for debugging performance issues, see Using the Performance view. 12 I had no problems with more complex Lottie files of around 1 MB. Probably it is better to preload the two svg files and then use them. Time Related Issues. Flutter performance profilingDiagnosing UI performance issues in Jul 30, 2020 · c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 3. Dart Language Tour: A comprehensive guide to the Dart language. Aug 9, 2024 · Optimizing performance can help developers be more productive. No doubt, apps can become laggy and janky. I started from the Flutter performance profiling page. Apr 27, 2025 · List of Top Flutter Sentry, App Performance, Crash Analytics & Insights packages. Bottlenecks here can result in dropped frames and janky animations. Profiling involves analyzing your app's performance to identify bottlenecks and optimize it. When an app performs well, developers can focus on building new features and improving the user experience, rather than fixing performance issues. 20 has reproducible steps The issue has been confirmed reproducible and is ready to work on c: performance Relates to speed or footprint issues (see "perf:" labels) and removed c: performance Relates to speed or footprint issues (see "perf:" labels) labels Jun 12, 2020 Jan 11, 2022 · performance issue in drawing using flutter. However I have noticed that the webview page load is more than twice the original time it takes on the native app and mobile safari browser. May 5, 2019 · Flutter — Firebase Performance and Crashlytics. May 15, 2025 · To examine performance issues in Flutter, see the Timeline view. If I don't use initialScrollOffset the performance is fine. In this blog post, we’ll explore a comprehensive set of tips and techniques Nov 27, 2023 · Tools and Resources for Flutter Performance Enhancement. May 28, 2024 · Performance overlay: Flutter DevTools offer a Performance Overlay that can be displayed on top of your running app. framework flutter/packages/flutter repository. Sep 20, 2023 · This guide will discuss the top reasons for performance issues with Flutter apps and how to optimize them. See also f: labels. 20 Found to occur in 1. This tool offers the visualization of some metrics, such as CPU utilization, frame rate and memory usage. Feb 25, 2020 · This only occurs on the modal bottom sheet (showModalBottomSheet) and not on the normal one (showBottomSheet). Try to run in release mode . Flutter offers built-in tools for performance profiling. platform-android Android applications specifically team-android Owned by Android platform team triaged-android Triaged by Android Maui vs. If widgets aren't displayed correctly on mobile or performance is poor, it's due to rendering with HTML. Please keep in mind that it is best to test performance on a real device and in profile mode. After upgrading from Flutter 3. zogvawefubouvaspzfddcdxgczftyxzxmxcuulxtyuuiuaacwdw