Pyodide

CPython ported to WebAssembly through Emscripten, so Python and its packages run in the browser and Node.js.

Adoption1 site

Ranked 14 of 15 in Compiled-to-Web & WebAssembly0.6% of the 172 tracked sites using Compiled-to-Web & WebAssembly

Pricing: open-source

About Pyodide

Any pure Python package with a wheel on PyPI installs in the browser under Pyodide through micropip, and many packages with compiled extensions have been ported as well, scientific libraries such as NumPy and pandas among them.

Sources: Pyodide documentation · Checked 16 Oct 2026

Websites using Pyodide

numpy.org

Who added or dropped it

No switches yet. We rescan every site monthly, and any site that adds or drops Pyodide shows up here.

Often used with

ARIA landmarks (a11y practice)100%
Bulma100%

Loading…