Most of the common translation options should work offline (ie Fusion is capable), but Fusion sometimes gets stuck in a weird state where it insists it needs connectivity. Perhaps it's a quota thing but I've never found it to be consistent. This happens fairly often with STLs for 3D printing.
Once it's gotten into that hole it will often refuse to export any other format until connectivity is restored, even if the app is restarted. It's known behaviour, for example the official guidance is that changing binary to ascii might help, or you shouldn't export directly to a slicer when offline, or don't use certain menus. But it seems like a wontfix.
Once it's gotten into that hole it will often refuse to export any other format until connectivity is restored, even if the app is restarted. It's known behaviour, for example the official guidance is that changing binary to ascii might help, or you shouldn't export directly to a slicer when offline, or don't use certain menus. But it seems like a wontfix.