To reduce the file size of a scene you have created you can:
- Try deleting any unused assets by going to the Developer tab, right mouse clicking on the Libraries and selecting Delete Unused Assets.
- You can also choose to save the file as a standard scene instead of a monolithic scene. This will mean that textures and CAD files are not a part of the scene so the files for the textures and CAD will also have to be transferred along with the scene to any PC you wish to open the scene.
- If you have already saved a scene and need to share the file zipping it will also largely reduce the file size