Image
What is a .3dmf file?
A .3dmf file is a QuickDraw 3D Metafile (ASCII). This is an image format — a picture, drawing or graphic. Confusingly, this extension has been used by 3 different formats over the years — they're all listed below.
This extension has been used by more than one format
3 different formats have claimed .3dmf over the years, so two files with the same extension aren't necessarily the same kind of thing.
How to open a .3dmf file
- GIMP (free) and IrfanView open a very wide range of image formats, including obsolete ones.
- XnView MP is the best bet for unusual or legacy image types.
- Your operating system's built-in viewer may work for mainstream formats.
The registry records this extension against QuickDraw 3D Metafile (ASCII), QuickDraw 3D Metafile (Binary), QuickDraw 3D Metafile (Binary), so software from that family is the most likely match.
How to convert a .3dmf file
- Open it in GIMP or XnView and export as .png (lossless) or .jpg (smaller).
The technical record
For archivists, developers and the merely curious: these are the PRONOM registry entries for .3dmf.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| QuickDraw 3D Metafile (ASCII) | — | — | fmt/1049 |
| QuickDraw 3D Metafile (Binary) | 1 | — | fmt/1050 |
| QuickDraw 3D Metafile (Binary) | 0 | — | fmt/1203 |