DEV Community: Hafiz Rizwan Umar

Flutter Web Emulator: Run, Test, and Learn Flutter Without Leaving VS Code

Hafiz Rizwan Umar — Sat, 25 Apr 2026 07:44:38 +0000

The Problem Every Flutter Developer Hits on Day One

You write your first Flutter web app. You run it. It opens in a browser tab — full screen, desktop layout, no device frame, no mobile context whatsoever. You squint at it and try to imagine how it will look on a phone. You resize the browser window manually. You toggle Chrome's device toolbar, which gives you a rough approximation but none of the feel of a real device. You switch between your editor and your browser constantly, losing focus every time.

Then you want to test device rotation. Or check how your UI holds up on a smaller screen like a Galaxy A series phone versus a larger one like a Pixel 7 Pro. Or capture a clean screenshot for your app store listing. For each of these things, you either need a physical device connected via ADB, an Android emulator running alongside your editor eating your RAM, or a series of workarounds that pull you further and further away from the code you are actually trying to write.

This is the daily friction that Flutter web developers accept because they assume there is no better way. Flutter Web Emulator exists to prove that assumption wrong.

What Is Flutter Web Emulator?

Flutter Web Emulator is a VS Code extension built by Hafiz Rizwan and the Minderfly team in Lahore, Pakistan. It embeds a phone-like emulator directly inside your VS Code editor, letting you run, preview, and test your Flutter web applications in a realistic mobile device frame without ever leaving your development environment.

No separate emulator window. No browser tab juggling. No RAM-hungry Android Virtual Device running in the background. Your Flutter web app runs inside VS Code, in a device frame that looks and behaves like a real phone, right next to the code that produces it.

It is available on the VS Code Marketplace and Open VSX Registry — the two primary distribution platforms for VS Code extensions — and has been adopted by over 9,000 active developers across more than 80 countries. It carries a 3-day free trial and then costs just $1 for lifetime access. One dollar. Lifetime. No subscriptions.

Get it on VS Code Marketplace:
👉 https://marketplace.visualstudio.com/items?itemName=HafizRizwanUmar.flutter-web-emulator

Get it on Open VSX:
👉 https://open-vsx.org/extension/hafizrizwanumar/flutter-web-emulator/

Get it on Gumroad:
👉 https://rizwanumar.gumroad.com/l/flutterwebemulator

What It Actually Does

Hot Reload Inside the Emulator

Flutter's hot reload is one of the best developer experiences in modern mobile development — make a change, see it instantly, keep your app state. Flutter Web Emulator preserves that experience entirely. Your hot reload works inside the emulator frame exactly as it does in a browser. Save your file and your changes appear in the device preview immediately, no refresh required, no state lost.

This means your entire development loop — write, reload, inspect, iterate — happens inside a single VS Code window. The context switching that used to break your concentration is gone.

Multiple Device Presets

Different devices have different screen dimensions, aspect ratios, and pixel densities, and your UI needs to hold up across all of them. Flutter Web Emulator ships with multiple device presets covering a range of popular Android form factors, so you can switch between them and immediately see how your layout responds.

Testing your app on a compact phone screen and then switching to a larger device takes seconds — no configuration, no separate emulator instances, no waiting for a virtual device to boot.

Device Rotation

Portrait and landscape support is a requirement for almost every serious Flutter application, and it is one of the most tedious things to test without a physical device. Flutter Web Emulator lets you rotate the device frame with a single click, instantly switching your app between portrait and landscape orientation so you can verify your responsive layout handles both correctly.

Android Mirroring via ADB

For developers who want to go further, Flutter Web Emulator supports Android device mirroring via ADB. Connect a physical Android device, enable developer options and USB debugging, and mirror its display directly into the emulator panel inside VS Code. This bridges the gap between web preview and real device testing without forcing you to leave your editor or set up a separate mirroring tool.

Screenshot Capture

Clean, properly framed screenshots of your Flutter app are essential for app store listings, portfolio pieces, client presentations, and documentation. Flutter Web Emulator lets you capture screenshots of your app inside the device frame directly from VS Code — no screen recording software, no cropping, no manually framing a browser window.

The Course Nobody Expected: 180+ Lessons on Flutter Development

Here is what makes Flutter Web Emulator genuinely unusual as a developer tool. It does not just help you test Flutter apps. It teaches you how to build them.

Flutter Web Emulator comes bundled with a complete Flutter development course covering 10 modules and more than 180 lessons, accessible directly through the extension and the companion site at flutterwebemulator.site. This is not a curated list of YouTube links or a collection of documentation pages. It is a structured, curriculum-grade course built for developers at every level — from people writing their first Dart variable to engineers implementing clean architecture and writing unit tests.

The Full Course Curriculum

Module 1 — Getting Started with Dart and Flutter
Everything you need to go from zero to a running Flutter project. What Flutter is, how its architecture works, how to install the SDK, how to configure your IDE, the essential Flutter CLI commands, and the Dart fundamentals — variables, types, functions — that underpin everything else.

Key lessons include: What is Flutter — Architecture and History, Installing Flutter SDK, Setting Up IDE, Flutter CLI Commands, Dart Basics — Variables.

Module 2 — Flutter Widgets and Layouts
Flutter's widget model is its most distinctive feature and its most important concept to understand deeply. This module covers the widget tree from first principles, the difference between stateless and stateful widgets, how to build responsive layouts that adapt to any screen size, and how to implement theming across your application.

Key lessons include: Everything is a Widget, Stateless vs Stateful, Responsive Layouts, Theming Guide.

Module 3 — Navigation and Routing
Real applications have multiple screens, and navigating between them correctly is not trivial. This module covers Flutter's Navigator API, GoRouter for declarative routing in larger applications, and deep link implementation for web and mobile.

Key lessons include: Navigator Basics, GoRouter Setup, Deep Links.

Module 4 — State Management Mastery
State management is where Flutter projects either scale cleanly or fall apart. This module covers the three most widely used approaches in production Flutter applications — Provider, Riverpod, and the BLoC pattern — with practical implementation guidance for each.

Key lessons include: Provider Setup, Riverpod Basics, BLoC Pattern.

Module 5 — Networking and REST APIs
Most Flutter apps talk to a backend. This module covers HTTP fundamentals, the Dio package for advanced request handling, and real-time communication with WebSockets — including building a working chat feature.

Key lessons include: HTTP Basics, Dio Package, WebSockets Chat.

Module 6 — Firebase and Backend Integration
Firebase is the most widely used backend-as-a-service in the Flutter ecosystem. This module walks through project setup, Firestore real-time database integration, and push notification implementation with Firebase Cloud Messaging.

Key lessons include: Firebase Setup, Firestore Real-time, Push Notifications.

Module 7 — Local Storage and Persistence
Not everything goes to a server. This module covers on-device data persistence with SQLite for relational storage and Isar for the high-performance NoSQL use cases that SQLite is not designed for.

Key lessons include: SQLite Basics, Isar Database.

Module 8 — Animations and Custom UI
Flutter's animation system is one of its most powerful and most underused capabilities. This module covers explicit animations for precise control and CustomPainter for drawing entirely custom UI elements that the widget library cannot provide.

Key lessons include: Explicit Animations, Custom Painter.

Module 9 — Performance, Architecture, and Testing
This is where good Flutter engineers separate themselves from the rest. Clean architecture implementation with proper layer separation, performance profiling, and unit testing — the skills that make production-grade Flutter applications maintainable at scale.

Key lessons include: Clean Architecture Layers, Unit Testing.

Module 10 — Publishing and Platform Specifics
Getting your app out the door. App signing for Android, platform-specific configurations, and Flutter web deployment — everything you need to take a completed application from your local machine to production.

Key lessons include: Android Signing, Flutter Web Deployment.

The full course is available at flutterwebemulator.site and integrated directly into the extension experience.

The Numbers Speak for Themselves

Flutter Web Emulator is not a new extension looking for its first users. It has already been adopted by a substantial and growing global developer community.

6,800+ installs on the VS Code Marketplace
3,800+ installs on Open VSX
9,000+ active users across more than 80 countries

For a paid VS Code extension in a competitive ecosystem — where most developers default to free tools — these numbers reflect genuine utility. Developers are finding Flutter Web Emulator, trying it, and paying for it because it solves a real problem in a way nothing else does.

Try It Free. Own It for $1.

The free trial gives you 3 full days of complete access — every feature, the full course, no limitations. After that, lifetime access costs exactly $1.

That is not a typo. One dollar. Permanent access. All future updates included. No subscription, no renewal, no annual fee creep.

This pricing reflects a deliberate philosophy at Minderfly: developer tools should be accessible to developers everywhere — including those in emerging markets where $20-per-month SaaS pricing puts good tools out of reach. A developer in Lahore, Lagos, or Dhaka deserves the same quality tooling as one in San Francisco. At $1, that argument is hard to argue with.

Get Flutter Web Emulator:

VS Code Marketplace: https://marketplace.visualstudio.com/items?itemName=HafizRizwanUmar.flutter-web-emulator
Open VSX: https://open-vsx.org/extension/hafizrizwanumar/flutter-web-emulator/
Gumroad: https://rizwanumar.gumroad.com/l/flutterwebemulator

Who Is Behind This?

Flutter Web Emulator is built and maintained by Minderfly — a bootstrapped software product studio based in Lahore, Pakistan, building affordable, high-quality software tools for developers and businesses across emerging markets and beyond.

Minderfly is incubated at NIC Pakistan as part of Cohort 3, recognised among the country's most promising technology startups. The studio has won three startup competitions, holds a global rank of approximately 150th in Google Hash Code, and was selected as a Top 20 Semi-Finalist in the Bangkok Business Challenge 2026 at Sasin School of Management — competing among 385 teams from more than 20 countries.

Beyond its product portfolio, Minderfly is a full-service software development team that works with startups, businesses, and entrepreneurs who need serious software built properly.

Minderfly builds:

Web Development — Production-grade web applications, SaaS platforms, dashboards, and marketing sites built with React, Next.js, Node.js, and AWS infrastructure.

Mobile App Development — Cross-platform iOS and Android applications built with Flutter. One codebase, two platforms, native performance throughout.

Windows Desktop App Development — Multiple shipped Microsoft Store applications across video conversion, PDF editing, and developer tooling.

SaaS Product Development — End-to-end SaaS builds covering architecture, product design, billing integration, user management, and ongoing iteration. If you have a SaaS idea and need a team that has built and shipped SaaS products before, this is the team.

AI-Powered Product Development — LLM integration, AI workflows, offline AI features, and intelligent automation built into products that are genuinely smarter as a result.

EdTech and LMS Platforms — Deep institutional expertise in learning management systems, course delivery platforms, and educational tooling for universities and independent educators.

If you need software built by a team that ships real products for real users, reach out to Minderfly.

The Bottom Line

Flutter Web Emulator solves a problem every Flutter web developer faces and nobody had properly addressed inside VS Code before. It brings the device preview experience directly into your editor, keeps your development loop tight and uninterrupted, supports hot reload, rotation, ADB mirroring, and screenshot capture — and then goes further by bundling a complete 180+ lesson Flutter course that takes you from installation to production deployment.

It has over 9,000 active users across 80+ countries. It costs $1 for lifetime access after a 3-day free trial. There is genuinely no reason not to try it.

Download Flutter Web Emulator today:

VS Code Marketplace: https://marketplace.visualstudio.com/items?itemName=HafizRizwanUmar.flutter-web-emulator
Open VSX: https://open-vsx.org/extension/hafizrizwanumar/flutter-web-emulator/
Gumroad: https://rizwanumar.gumroad.com/l/flutterwebemulator

Flutter Web Emulator is built and maintained by Minderfly Studio, Lahore, Pakistan. For software development enquiries, collaborations, or partnership opportunities, contact the Minderfly team directly.

Cinemafly: The Windows Video Converter That Finally Gets It Right

Hafiz Rizwan Umar — Sat, 25 Apr 2026 07:06:24 +0000

The Problem Nobody Was Solving
Let's be honest about something. Video conversion on Windows has been broken for years — and the software industry has been perfectly comfortable letting it stay that way.
You download a movie or a clip in MKV format. You double-click it. Nothing plays. Or the video plays but there is no audio. Or the subtitles are missing. So you go searching for a converter. What you find is a graveyard of sketchy websites with fifteen fake "Download" buttons, tools from 2010 with interfaces that look like they were designed during the Internet Explorer era, and "free" software that slaps a giant watermark across your finished video and then asks you to pay $49 a year to remove it.
The premium options are not much better. Most charge monthly subscriptions for features that should have been standard a decade ago. Others quietly install browser toolbars or phone home with your usage data. And if you want something like HEVC / H.265 support or 4K UHD output on Windows? Good luck — Microsoft charges extra for that codec through the Windows Store, and most converters do not even tell you that upfront.
This is the problem that Cinemafly was built to fix. Not partially fix. Actually fix.

What Is Cinemafly?
Cinemafly is a modern, offline-first video converter for Windows, built by Hafiz Rizwan and the Minderfly team based in Lahore, Pakistan. It was designed for one purpose: to make video conversion fast, clean, and completely free of the nonsense that has plagued this category of software for years.
No watermarks. No subscriptions. No telemetry. No ads. No fake free tiers. Just a well-designed desktop tool that converts your videos the way you would expect any professional software to in 2025.
Under the hood, Cinemafly runs on FFmpeg — the same open-source multimedia engine that powers YouTube, VLC, Handbrake, and hundreds of other tools trusted by professionals worldwide. The difference is that Cinemafly wraps FFmpeg in a genuinely modern Windows interface built with Flutter, so you get professional-grade performance without ever opening a terminal or memorising a single command.

**What Cinemafly Supports
**This is where Cinemafly separates itself from everything else in its price range — and frankly, from tools that cost far more.
Full format and codec support, out of the box:

HEVC / H.265 ✓
4K UHD ✓
Dolby Atmos ✓
AV1 ✓
MKV · MP4 · AVI · MOV ✓

Most Windows tools either charge you extra for HEVC support, require you to install separate codec packs, or silently produce broken output when they encounter H.265 files. Cinemafly handles all of it natively — no additional purchases, no codec hunting, no troubleshooting.
Whether you are a content creator converting footage from your camera, a student compressing lecture recordings to save storage, a developer archiving project demos, or someone who just downloaded a movie in the wrong format — Cinemafly handles it without asking you to jump through hoops.

Built Different, on Purpose
Cinemafly is not a port of a fifteen-year-old open-source project with a fresh coat of paint. It was built from scratch using Flutter for Windows, which gives it a native, fluid interface that actually feels at home on a modern Windows machine.
The design philosophy is simple: everything you need should be within two clicks. You drop your file in, choose your output format, and convert. The application does not hide settings you need behind paywalls. It does not slow you down with unnecessary wizards or confirmation dialogs. It does not send your file metadata to a server somewhere.
And it is 100% offline. No tracking. No telemetry. Just you and your content.
This matters more than people realise. Many "free" conversion tools on the market today are essentially data collection products with a conversion feature bolted on. They know what files you are converting, when, and from what device. Cinemafly does none of that. What happens on your machine stays on your machine — always.

Try It Free. Own It Forever.
Here is the part that tends to surprise people.
Try Cinemafly free for 3 days — full access, no limitations. No credit card required upfront. Every feature unlocked from day one. You get the real product, not a crippled demo designed to frustrate you into upgrading.
If you love it — and the feedback suggests you will — you can own it forever for just $5. One payment. Lifetime updates. No subscriptions. Ever.
That is not a promotional price. That is the actual price. Cinemafly is part of Minderfly's commitment to building genuinely affordable software for users who are tired of being squeezed by SaaS pricing on tools that should have been one-time purchases.
Get Cinemafly on Gumroad (with 3-day free trial):
👉 https://rizwanumar.gumroad.com/l/cinemafly
Get Cinemafly on the Microsoft Store:
👉 https://apps.microsoft.com/detail/9p5xw3mzlqb0?hl=en-US&gl=US

Who Is Minderfly?
Cinemafly is one product in a growing portfolio built by Minderfly — a bootstrapped software product studio based in Lahore, Pakistan, building affordable, high-quality software tools for users and businesses across emerging markets and beyond.
Minderfly products are distributed across the Microsoft Store, VS Code Marketplace, Amazon Store, and Gumroad — and are currently used by thousands of users across more than 80 countries.
But Minderfly is not just a product studio. It is also a full-service software development team that works with startups, businesses, and entrepreneurs who need serious software built properly.
If you need software built, Minderfly builds it:
Web Development — From marketing sites and landing pages to full-scale web applications with complex backends, databases, and integrations. Built with modern stacks including React, Next.js, Node.js, and cloud infrastructure on AWS.
Mobile App Development — Cross-platform mobile applications built with Flutter, targeting iOS and Android from a single codebase without compromising on performance or native feel.
Windows Desktop App Development — Native Windows desktop applications, a speciality of the Minderfly team with multiple shipped and distributed products already on the Microsoft Store.
SaaS Product Development — End-to-end SaaS builds, from architecture and product design through to deployment, billing integration, user management, and ongoing iteration. If you have a SaaS idea and need a team that has done it before, this is where Minderfly excels.
AI-Powered Products — Integration of large language models, AI workflows, and intelligent automation into products and internal tools. Minderfly has shipped AI-powered Chrome extensions, LMS platforms, and developer tooling.
EdTech and LMS Development — Deep expertise in learning management systems, course platforms, and educational software for institutions and independent educators.
The team has been recognised by NIC Pakistan as a Top 20 startup from over 1,400 applicants, has won three startup competitions, and was recently selected as a Top 20 Semi-Finalist in the Bangkok Business Challenge 2026 at Sasin School of Management — competing among 385 teams from 20+ countries.
If you are looking for a lean, talented, and battle-tested development team that ships real products, reach out to Minderfly.

The Bigger Picture
Cinemafly exists because good software should not require a subscription, an internet connection to a telemetry server, or a computer science degree to operate. It should just work — cleanly, quickly, and privately.
At $5 for lifetime access with a 3-day free trial, there is genuinely no risk. Download it, use every feature for three days without paying a single cent, and make up your own mind.
The software industry has spent years training users to expect less and pay more. Cinemafly — and everything Minderfly builds — pushes back against that. One product at a time.
Download Cinemafly today:

Gumroad (3-day free trial): https://rizwanumar.gumroad.com/l/cinemafly
Microsoft Store: https://apps.microsoft.com/detail/9p5xw3mzlqb0?hl=en-US&gl=US

Cinemafly is built and maintained by Minderfly Studio, Lahore, Pakistan. For software development enquiries, collaboration, or partnership, contact the Minderfly team directly.