STL viewer

[JonnyBro]

Describe the idea / solution you'd like
STL/3mf viewer for 3D model files and projects.

Additional context
I use copyparty to share (and archive) models that I found and it would be nice for someone (or me) to be able to preview models without installing OrcaSlicer or using external sites. Not sure if it possible, but maybe a simple editor too? (just a viewer is completely fine)

[paidlowered]

Since this surely isn't necessary to most people, it may be a good idea to consider a plugin/module system. You could also just use Nextcloud, there is a plugin for viewing STLs