ipycanvas

library0.14.3pypypi✓ verified 84d ago

Interactive widgets library exposing the browser's Canvas API for Jupyter notebooks and JupyterLab. Current version 0.14.3. Release cadence: irregular, with multiple releases per year.

web-framework data

pip install ipycanvas

github ↗package ↗

INSTALL

IMPORT

SIG · IPYCANVAS

ipycanvas

web-frameworkpythonv0.14.3

Install

7.9s avg

Import

2135ms

Disk

171MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v0.14.3 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 2.182s · 177.3MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 7.9s · import 2.088s · 174MB

171MB installed

● package 171MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Canvas

✓ from ipycanvas import Canvas

✗ from ipycanvas.widgets import Canvas

Canvas is exposed at top-level, not in submodule

MultiCanvas

✓ from ipycanvas import MultiCanvas

No common wrong import known

Create a canvas, set fill style, draw a rectangle, and display.

from ipycanvas import Canvas canvas = Canvas(width=200, height=200) canvas.fill_style = 'blue' canvas.fill_rect(20, 20, 100, 100) canvas

Debug

Known issues

breakingIn version 0.12.0, the deprecated `size` property was removed. Use `width` and `height` instead.

fix

Replace `canvas.size = (200, 200)` with `canvas.width = 200` and `canvas.height = 200`.

affects: >=0.12.0

gotchaipycanvas does not support the full HTML5 Canvas API; only a subset of methods is implemented. For example, `getImageData` returns a list instead of ImageData object.

fix

Check the documentation for supported methods; use `canvas.get_image_data(x, y, w, h)` which returns a list of RGBA values.

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'ipycanvas'

ipycanvas is not installed.

fix

Run `pip install ipycanvas` or `conda install -c conda-forge ipycanvas`.

ipycanvas is not displayed in Jupyter notebook

The ipywidgets extension may not be enabled or the notebook needs a restart.

fix

Run `jupyter nbextension enable --py widgetsnbextension` or restart the kernel.

Upgrade

Version history

0.14.3latest on PyPI · released Dec 11, 2025

Audit

Dependencies

ipywidgetsrequiredRequired for widget communication with Jupyter

numpyoptionalUsed for image data and array operations

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/jupyter-widgets-contrib/ipycanvas ↗

packagehttps://pypi.org/project/ipycanvas/ ↗