Info

NiceGUI - An easy-to-use, Python-based UI framework

7/5/2025

NiceGUI

NiceGUI is an easy-to-use, Python-based UI framework, which shows up in your web browser. You can create buttons, dialogs, Markdown, 3D scenes, plots and much more.

It is great for micro web apps, dashboards, robotics projects, smart home solutions and similar use cases. You can also use it in development, for example when tweaking/configuring a machine learning algorithm or tuning motor controllers.

NiceGUI is available as PyPI package, Docker image and on conda-forge as well as GitHub.

Features

  • browser-based graphical user interface
  • implicit reload on code change
  • acts as webserver (accessed by the browser) or in native mode (eg. desktop window)
  • standard GUI elements like label, button, checkbox, switch, slider, input, file upload, …
  • simple grouping with rows, columns, cards and dialogs
  • general-purpose HTML and Markdown elements
  • powerful high-level elements to
    • plot graphs and charts,
    • render 3D scenes,
    • get steering events via virtual joysticks
    • annotate and overlay images
    • interact with tables
    • navigate foldable tree structures
    • embed video and audio files
  • built-in timer to refresh data in intervals (even every 10 ms)
  • straight-forward data binding and refreshable functions to write even less code
  • notifications, dialogs and menus to provide state of the art user interaction
  • shared and individual web pages
  • easy-to-use per-user and general persistence
  • ability to add custom routes and data responses
  • capture keyboard input for global shortcuts etc.
  • customize look by defining primary, secondary and accent colors
  • live-cycle events and session data
  • runs in Jupyter Notebooks and allows Python’s interactive mode
  • auto-complete support for Tailwind CSS
  • SVG, Base64 and emoji favicon support
  • testing framework based on pytest

Installation

python3 -m pip install nicegui

Usage

Write your nice GUI in a file main.py:

from nicegui import ui


ui.label('Hello NiceGUI!')
ui.button('BUTTON', on_click=lambda: ui.notify('button was pressed'))


ui.run()

Launch it with:

python3 main.py

The GUI is now available through http://localhost:8080/ in your browser. Note: NiceGUI will automatically reload the page when you modify the code.

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