Add Rhino Version Info to .3dm File Metadata or Extension

Hi,
I often work with multiple Rhino versions in parallel — Rhino 6 (for V-Ray 3.6 compatibility), Rhino 7, and currently testing Rhino 8. It would be very helpful if the file showed which version it was originally saved in, either in the extension (e.g. .3dm8) or as visible metadata. This would make file management much easier, especially when switching between versions or collaborating with others.
Thanks for considering this! Best regards

Hi Grober -

The Audit3dmFile command gives you that information.
-wim

1 Like

Thanks! I’m aware of the Audit3dmFile command — it’s helpful, but not ideal for quick identification, especially when managing multiple files.
What I had in mind was a way to see the Rhino version info at a glance, without opening Rhino or running a command — for example: As part of the file extension (e.g. .3dm8), or As metadata visible in Windows Explorer / macOS Finder columns. It would be especially useful when working across different versions, as I currently do with Rhino 6 (for V-Ray 3.6), Rhino 7, and Rhino 8.
Still, thanks again for pointing out the command!

PS. Or even displayed in the Rhino open file dialog.

Hi @grober4,

Install this:

– Dale

If you don’t want to use Rhino or any Rhino add on, you can use some text editors, although for very large files a Hex editor may be needed.

Even Notepad that is included with Windows will work for smaller files, but it will freeze after the file is opened. The Rhino version is at the top of the file when it is opened, so that still should work for you since you don’t need to scroll down to see any more of the file.

If you have a larger file, you would need a more robust app. Notepad ++ (free) seems to work for files up to a few hundred MBs.

For very large files, UltraEdit, for example, will work for files of a few GBs.
Hex Editors may also work for very large files, there are a few free ones.

Thanks! RhinoFileVersion isn’t exactly what I was looking for, but it’s better than Audit3dmFile for checking only version information.

I think it would be really useful if this version was visible directly in the file system or in the Rhino file dialog, especially when working with several versions in parallel. But I really appreciate this tip.

Thanks for the suggestion too! I tested it and you’re right - I use TC and F3 previews the file, opening a .3dm file in shows the Rhino version at the top. It’s a neat workaround when Rhino is not available.
But it would be nice if a more visible and user-friendly solution (e.g. showing version information in Explorer metadata or in the Rhino file dialog) would be great to improve daily workflows, especially with larger volumes of files.
I really appreciate all the feedback!