Extract text from SpeedTree models (SPT)
To convert SPT models to another format, you need SpeedTree or other 3D software.
To convert other file formats to the "Procedural 3D Model File" file type, you need software like SpeedTree or a similar tool.
The .spt file extension is highly fragmented and used by dozens of unrelated applications. Most commonly, it represents a SpeedTree Procedural Tree Model created by SpeedTree (Interactive Data Visualization, Inc.). Game developers and VFX artists use these files to store complex, mathematically generated 3D foliage and vegetation data. Alternatively, .spt files are used as game scripts for the Kirikiri / KAG visual novel engine, as 3D printing support structure files in Simplify3D, as molecular visualization scripts in RasMol or Jmol, or as configuration backups for Thomson and Speedtouch routers.
The biggest disadvantage of a .spt file is its absolute lack of standardization. A SpeedTree .spt file is a proprietary, closed format (sometimes using HDF5 under the hood) that requires expensive middleware licenses to open or integrate into game engines like Unreal or Unity. A Simplify3D .spt file only contains specific coordinate geometry for print supports, lacking the actual 3D model, making it useless outside that specific slicing software. Router config files are often compressed using GZIP but lack a standard archive extension. Standard online converters fail to process .spt files because they cannot guess which of the 15+ conflicting variations the file actually belongs to.
If you are dealing with a 3D model, the best conversion targets are standard FBX or OBJ files, though you will lose procedural editing capabilities. If dealing with a router configuration, extracting the internal data to a plain TXT or XML file is the standard solution.
Because of this extreme fragmentation, .spt files are notoriously difficult to open or convert. Emphasize that often only the original software can properly read or export the data. If our analysis detects a supported underlying or embedded format - such as ZIP, GZIP, RIFF, or XML - viewing or conversion may still be possible.
Convert.Guru analyzes your SPT file, detects the exact format, and lets you read the text inside.
Users also converted STP, SPTX, MP4, SKP, XPT, ZIP, RPM, SIT, CBR, CPT and CU files.
If you want to convert SPT file to CBR, CPT, CU, DWG, DXF, DGN, RVT, RFA, SKP, 3DM, STEP or IGES, you can use SpeedTree or similar software from the "3D Procedural Tree Model" category. In the File menu, look for Save As… or Export….
To convert SLDASM, DGN, PRT, IAM, X_B, CATPRODUCT, SLDPRT, RVT, ASM, DWG, CATPART or DXF files to SPT, try SpeedTree or another comparable tool in the "3D Procedural Tree Model" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our SPT converter.