napari: a fast, interactive viewer for multi-dimensional images in Python#

  • view and explore 2D, 3D, and higher-dimensional arrays on a canvas;

  • overlay derived data such as points, polygons, segmentations, and more;

  • annotate and edit derived datasets, using standard data structures such as NumPy or Zarr arrays, allowing you to

  • seamlessly weave exploration, computation, and annotation together in imaging data analysis.

Install with Python

Install napari in a Python environment for the most customizable experience.

Install as Python package
Download napari app

A standalone installer for when you want napari without setting up Python first.

Install as an application
Quick start

Launch napari, open images, and learn the core interactions of the viewer.

Quickstart
Plugins

Discover how plugins extend napari and learn to build your own.

Plugins

funding#

If you like napari and want to support our mission, please consider a donation to our efforts.

napari is a fiscally sponsored project of NumFOCUS, a US-based non-profit supporting open science and open source scientific software.

We gratefully acknowledge funding support from the Chan Zuckerberg Initiative (CZI) and NumFOCUS.