---
id: flet-web
version: "0.86.5"
license: Apache-2.0
license_treatment: permissive
maintenance: active
---

# flet-web — Flet web client in Flutter.

License: permissive · Maintenance: active · Downloads: 165.4K/mo

## What it is and what it does

Flet-web is the web deployment layer of the Flet framework, which lets developers build cross-platform applications (iOS, Android, Windows, Linux, macOS, web) entirely in Python without frontend knowledge. It uses Flutter for UI rendering and supports two deployment modes: client-side execution in modern browsers via WebAssembly and Pyodide, or server-side deployment as a Python web app with real-time UI updates. The framework includes 150+ built-in Material and Cupertino design controls, supports popular Python libraries like NumPy and pandas, and provides built-in packaging for standalone executables and app store deployment.

The package depends on flet (the core framework), fastapi, and uvicorn, enabling both serverless browser-based apps and traditional web server deployments. It is actively maintained with low installation friction and no known security vulnerabilities.

Use it for:

- Build a cross-platform mobile and desktop app from a single Python codebase without learning Dart, Swift, or JavaScript.
- Deploy a Python web app to browsers using WebAssembly, avoiding traditional frontend frameworks entirely.
- Create data visualization dashboards using Python with Material Design UI controls and real-time updates.
- Package and distribute standalone executables or bundles for Windows, macOS, Linux, iOS, and Android from one project.
- Prototype and test UI-driven applications on mobile devices using Flet App during development.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Flet-web is the web client component of Flet, enabling Python-only cross-platform app development that runs natively in browsers via WebAssembly and Pyodide, or as a server-side Python web app.

Yes, if you want to build web or cross-platform apps in Python without frontend experience. The low install friction, active maintenance, permissive license, and large community make it a solid choice. However, note that it is relatively new (first release November 2024), so production use should account for potential API changes and edge cases in the WebAssembly/Pyodide integration.

## Install

pip install flet-web
uv add flet-web
poetry add flet-web

## Installing flet-web

Before you install: Low friction installation with a pure Python wheel. The package is actively maintained with recent commits and a large community (16577 GitHub stars), though it is relatively new (first release November 2024).

License in practice: Licensed under Apache-2.0 (permissive), allowing commercial use, modification, and distribution with minimal restrictions—suitable for most projects.

Quickstart:

pip install flet-web

import flet as ft

def main(page: ft.Page):
    page.add(ft.Text("Hello, web!"))

ft.run(main)

Requires Python 3.10 or later; browser support for WebAssembly required for client-side execution.

Verify before relying:

- Whether flet-web is a separate package or a distribution variant of the main flet package.
- Performance characteristics and browser compatibility matrix for WebAssembly-based apps.
- Maturity level and stability guarantees given the November 2024 first release date.

## Package facts

- License: Apache-2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 165.4K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

python web app framework, cross-platform ui development, webassembly python apps, flutter python frontend, build web apps python only, cross-platform-ui, webassembly, flutter-python

[View on SkillFed](https://skillfed.io/packages/flet-web) · [View on PyPI](https://pypi.org/project/flet-web/)