Working with local files i/o

[Justyouraveragehomie]

Problem

I assume Voici can not work to import files, or export processed files?
For instance, to load in a local file using ipywidgets, or to save/download a file using ipywidgets from the notebook.
I have no issue using Voila to access local files, which I assume works because there is a server.
There is no example showing how to work with local files, other than https://jupyterlite.readthedocs.io/en/latest/howto/content/filesystem-access.html. Which seems to only be available for Chrome, likely because of security issues.

Not really a document improvement, but im just trying to understand if it is possible or not. Maybe with an external library...etc.

Thanks!