File Types
Several Max objects such as folder, umenu, and opendialog can refer to specific File Types. These can be either an explicit file extension beginning with a dot (.png, .wav, .mp3, etc.), or Macintosh four-character code. Even though they're called Macintosh codes, Max will recognize these on any platform.
Here's a list of those file types, together with a description and the standard extensions associated with each type.
| Code | Description | Extensions |
|---|---|---|
| 8BPS | Photoshop file | .psd |
| AFxB | FXB file | .fxb |
| AFxP | FXP file | .fxp |
| AIFF | AIFF audio file | .aif |
| AIFF | AIFF audio file | .aiff |
| ampf | Ableton Live Max Device | .amp |
| amxd | Ableton Live Max Device | .amxd |
| aPcs | VST Plug-In | .dll |
| aPcs | VST plug-in | .vst |
| APPL | Application | .app |
| APPL | Application | .exe |
| AUin | Audio Unit Plug-in | .auinfo |
| AUpi | Audio Unit Plug-in | .component |
| BMP | BMP file | .bmp |
| CAF | CAF audio file | .caf |
| cafe | Java class file | .class |
| css | CSS file | .css |
| DATA | audio file | .data |
| DICT | Dictionary file | .json |
| dict | Dictionary Instance | .maxdict |
| FBX | Autodesk FBX Model File | .fbx |
| FLAC | FLAC audio file | .flac |
| fold | Folder/Directory | Folder |
| gDSP | dsp.gen File | .gendsp |
| GenX | GenExpr file | .genexpr |
| GIFf | GIF file | .gif |
| gJIT | jit.gen File | .genjit |
| iLaF | External object | .mxd |
| iLaF | External object | .mxe |
| iLaX | External object | .mxo |
| iLaX | Macintosh External Object | .mxo |
| jar | Java Archive file | .jar |
| Jb3d | BlitzBasic 3D Model File | .b3d |
| Jbvh | Biovision BVH Motion Capture File | .bvh |
| Jdae | Collada Model File | .dae |
| JiT! | Jitter data file | .jit |
| JiT! | Jitter data file | .jxf |
| jlua | Lua Source File | .lua |
| Jmtl | Jitter Material File | .jitmtl |
| Jobj | Wavefront Object Model File | .obj |
| Jogr | Ogre3D XML Model File | .mesh.xml |
| JPEG | JPEG file | .jpeg |
| JPEG | JPEG file | .jpg |
| Jply | Stanford Polygon Library Model File | .ply |
| JSON | JSON | .json |
| JSON | Defaults file | .maxdefaults |
| JSON | Defaults definitions | .maxdefines |
| JSON | Help Patcher | .maxhelp |
| JSON | Patcher | .maxpat |
| JSON | Preferences file | .maxpref |
| JSON | Preset file | .maxpresets |
| JSON | Prototype | .maxproto |
| JSON | Query file | .maxquery |
| JSON | Swatches file | .maxswatches |
| Jstl | Stereolithography Model File | .stl |
| M4a | AAC audio file | .m4a |
| M4V | Video file | .m4a |
| maxb | Help file | .help |
| maxb | Patcher | .mxb |
| maxb | Patcher | .pat |
| maxc | Max Collective | .clct |
| maxc | Max Collective | .mxc |
| Midi | MIDI file | .mid |
| Midi | MIDI file | .midi |
| Midi | MIDI file | .syx |
| mLsn | Max Lesson File | .maxlesson |
| mMap | Max Mapping File | .maxmap |
| MooV | Video | .mov |
| Mp3 | MP3 audio file | .mp3 |
| mPak | Packed Package | .maxpack |
| MPEG | Video | .mpeg |
| MPEG | Video | .mpg |
| mpg4 | Video | .mp4 |
| mPrj | Project | .maxproj |
| mQur | Max Collection File | .maxcoll |
| mSnp | Snippet file | .maxsnip |
| mx@c | Collective | .mxf |
| mx64 | Windows x64 external object | .mxe64 |
| mxPL | Max Palette File | .maxpalette |
| mZip | Packed Project | .maxzip |
| NxTS | NeXT/Sun audio file | .snd |
| PICS | PICS file | .pics |
| PICT | PICT file | .pct |
| PICT | PICT file | .pict |
| PNG | PNG file | .png |
| PNG | PNG file | .png |
| PNGf | PNG file | .png |
| pSto | Pattrstorage Preset File (JSON) | .json |
| pStx | Pattrstorage Preset File (XML) | .xml |
| svg | SVG file | .svg |
| SWFL | Flash file | .swf |
| TEXT | OpenGL Shading Language file | .glsl |
| TEXT | Help file | .help |
| TEXT | Web page | .htm |
| TEXT | Web page | .html |
| TEXT | Java source file | .java |
| TEXT | Javascript file | .js |
| TEXT | XML OpenGL Pass Description file | .jxp |
| TEXT | XML Shader Description file | .jxs |
| TEXT | XML Reference file | .maxref.xml |
| TEXT | XML Tutorial file | .maxtut.xml |
| TEXT | XML Vignette file | .maxvig.xml |
| TEXT | Patcher | .mxt |
| TEXT | Patcher | .pat |
| TEXT | Text file | .txt |
| TEXT | Web page | .xhtml |
| TEXT | XML file | .xml |
| TIFF | TIFF file | .tif |
| TIFF | TIFF file | .tiff |
| ULAW | SND file | .snd |
| VfW | AVI video | .avi |
| WAVE | WAVE audio file | .wav |
| WMV2 | Video File | .asf |
| WMV3 | Video File | .wmv |
| WMVA | Video File | .wmv |
| WVC1 | Video File | .wmv |
| xdll | Windows external object | .mxe |
| xQZZ | Support file | .hibundle |
| XSLT | XSLT file | .xsl |
| YAML | YAML | .yaml |
| YAML | YAML | .yml |
| ZIP | Zip archive | .zip |