fastplotlib VS bokeh

https://github.com/kushalkolar/fastplotlib

Alternatively, try pygfx for ThreeJS graphics in Python leveraging wgpu. It works great in Notebooks through notebook-rfb. https://github.com/pygfx/pygfx

If you're adventurous, figure out how to make pygfx work with webgpu via wasm

Rather than using matplotlib, you could try either pygfx (https://github.com/pygfx/pygfx) or fastplotlib (https://github.com/kushalkolar/fastplotlib) to make higher performance graphics using Python.

However, it won't solve your problem of Python not being fast enough doing the calculations.

Bokeh - Interactive Web Plotting for Python.

Github: https://github.com/bokeh/bokeh

If you don’t mind passing html around this library allows you to share full interactive plot:

It sounds like you want BokehJS. It was one of the alternatives I was recommended while I was exploring, but for various reasons my particular use case is not so easy to integrate (plus my backend was already in Rust).

https://github.com/bokeh/bokeh

I did do a basic test, and the raw rects-on-screen performance is roughly comparable to my final solution.

I just came across this: https://bokeh.org/

Take a look at Bokeh. https://bokeh.org/

I recorded all 200 "I'm Phoebe Judge, this is Criminal" intros from the Criminal podcast, measured the length, and plotted using python's Bokeh package.