Vector File Formats Supported by AutoCAD
| Extension | Name | AutoCAD R14 Support |
| .3ds | 3D Studio Max and Viz native files | Write, using EXPORT or 3DSOUT commands. |
| .dwg | AutoCAD native drawing file | Read, using IMPORT command. Write, using EXPORT or SAVE or WBLOCK commands. |
| .dxf | Drawing Exchange File (DXF) | Read, using IMPORT command. Write, using EXPORT or DXFOUT commands. |
| .hgl | HP Graphics Language plotter language (HP-GL) | Write, with AutoCAD HP-GL plotter driver. |
| .hpg | HP Graphics Language Std. 2 plotterlanguage (HP-GL/2) | Write, with AutoCAD HP-GL/2 plotter driver |
| .igs | Initial Graphic Exchange Specification drawing (IGES) | Read and write with AutoCAD IGES Translator in R13 and above. Read with IGESIN command in R12 and earlier. |
| .plt | Plotter output file whose format varies,but is typically HP-GL or HP-GL/2. | Write, with any plotter driver. |
| .sat | Spatial Technology solid model file | Read, using IMPORT command. Write, using EXPORT command. |
| .slb | AutoCAD Slide library | Display in icon menus only |
| .sld | AutoCAD Slide file | Display on-screen. Write, using MSLIDE command. |
.stl | Stereo Lithography model | Write, using EXPORT or STLOUT commands. |
Hybrid File Formats Supported by AutoCAD
| Extension | Name | AutoCAD R14 Support |
| .clp | Windows Clipboard file | Use Windows Clipboard viewer to save; opening files with viewer places them on the clipboard, ready for inserting into AutoCAD or other Windows programs. |
| .dwf | Drawing Web Format | Write, using EXPORT command. |
| .eps | Encapsulated PostScript | Read, using IMPORT command. Write, using EXPORT command. Write, using RENDER command (raster only). Write, with R13’s raster file export plotter driver (raster only). |
| .ps | PostScript print file. | Write, using PostScript plotter driver. |
| .wmf | Windows Meta-File | Write, using EXPORT command. Read, using IMPORT command. |
Raster File Formats Supported by AutoCAD
| Extension | Name | AutoCAD R14 Support |
| .adi | ADI graphics | No longer supported |
| .bil | GeoSPOT | Read, with IMAGE command ( with CAD Raster support update). |
| .bmp. | Windows or OS/2 Bitmap. | Read, with IMAGE command. Write, using EXPORT command. Write, using RENDER command.. |
| .cal. | CALS Type 1 with CCITT Group 4 compression. | Write, using CALS plotter driver. |
| .cg4. | CALS Type 1 with CCITT Group 4 compression. | Write, using CALS plotter driver.. |
| .dib. | Device Independent Bitmap (Windows or OS/2 Bitmap). | Read, with IMAGE command.. |
| .fax | Group 3-encoded FAX image.. | Write, with R13’s raster file export plotter driver.. |
| .fit. | Flexible Image Transfer System (FITS). | Write, with R13’s raster file export plotter driver.. |
| .flc. | Autodesk Animator FLIC. | Read, with IMAGE command.. |
| .fli. | Autodesk Animator FLIC. | Read, with IMAGE command.. |
| .flm. | Film Roll (AutoCAD/AutoShade). | No longer supported. |
| .g3. | Group 3-encoded FAX image.. | Write, with R13’s raster file export plotter driver.. |
| .gif. | CompuServe’s Graphic Interchange Format (GIF 87a, GIF 89a). | Read-only in R14. Write, with R13’s raster file export plotter driver.. |
| .gp4. | CALS Type 1 with CCITT Group 4 compression. | Write, using CALS plotter driver.. |
| .iff. | Interchange File Format graphics (Amiga). | Write, with R13’s raster file export plotter driver.. |
| .ig4. | Image Systems Group4. | Read, with IMAGE command ( with CAD Raster support update).. |
| .igs. | Image Systems Grayscale. | Read, with IMAGE command ( with CAD Raster support update).. |
| .jpg. | Joint Photographic Experts Group (JPEG), Can be JFIF or JTIFF format.. | Read, with IMAGE command.. |
| .mil. | CALS Type 1 with CCITT Group 4 compression. | Write, using CALS plotter driver. Read, with IMAGE command ( with CAD Raster support update).. |
| .pbm. | Monochrome Portable Bit Map (Unix image type). | Write, with R13’s raster file export plotter driver.. |
| .pcl. | HP Printer Control Language. | Write, with any HP-GL plotter driver.. |
| .pct. | Macintosh PICT. | Read, with IMAGE command.. |
| .pcx. | Zsoft Paintbrush Graphic Fil. | Read, with IMAGE command. Write, using RENDER command.. |
| .pgm. | Grayscale Portable Bit Map (Unix image type). | Write, with R13’s raster file export plotter driver.. |
| .pj. | HP PaintJet file. | --empty cell in source---. |
| .png. | Portable Network Graphics (PNG). | Read, with IMAGE command.. |
| .ppm. | Color Portable Bit Map (Unix image type). | Write, with R13’s raster file export plotter driver. |
| .ras. | Sun Rasterfile. | Write, with R13’s raster file export plotter driver?. |
| .rlc. | Run Length Compressed. | Read, with IMAGE command ( with CAD Raster support update).. |
| .rle. | Windows or OS/2 Compressed Bitmap (Run Length Encoded). | Read, with IMAGE command.. |
| .rst. | CALS Type 1 with CCITT Group 4 compression. | Write, using CALS plotter driver.. |
| .rtl. | HP Raster Transfer Language | . |
| .sr. | Sun Rasterfile. | Write, with R13’s raster file export plotter driver?. |
| .sun. | Sun Rasterfile. | Write, with R13’s raster file export plotter driver?. |
| .tga. | Truevision Targa image file [Uncompressed,RLE]. | Read, with AutoCAD’s IMAGE command. Write, using RENDER command.. |
| .tif. | Tagged-Image File Format (TIFF). [Uncompressed, CCITT/FAX, Group 3/FAX, Group 4/FAX, RLE, GeoTIFF]. | Read, with AutoCAD’s IMAGE command. Write, using RENDER command.. |
| .x11. | X Windows bitmap file. | Write, with R13’s raster file export plotter driver?. |
| .xbm. | X Windows bitmap file. | Write, with R13’s raster file export plotter driver?. |
| .xpm. | X Windows bitmap file. | Write, with R13’s raster file export plotter driver?. |
| .xwd. | X Window System window dump. | Write, with R13’s raster file export plotter driver. |
| Common image formats not supported by AutoCAD | ||
| Extension | Name | Type |
| .ai | Adobe Illustrator | Vector |
| .cdr | CorelDRAW document | Vector |
| .cgm | Computer Graphics Metafile | Hybrid |
| .dcx | Multiple-page PCX file, for FAX software | Raster |
| .pcd | Photo CD | Raster |
| Adobe Acrobat Portable Document Format | Hybrid | |
| .pic | Lotus 1-2-3 graphic file | Vector |
| .psd | Adobe PhotoShop image | Raster |
| .sgi | graphics (IRIS - Silicon Graphics) | Raster |
| .srf | Sun Raster File graphics | Raster |
| .wpg | Corel WordPerfect Graphic | ? |
| .wrl | Virtual Reality Modeling Language (VRML) | 3D model |