# IO > Use this feature to import and export 3D assets and data in your projects using the Pixyz SDK's asset transformer. API functions: * [io.importScene](/asset-transformer-sdk/2025.7/api/python/io_functions.md#importscene) * [io.exportScene](/asset-transformer-sdk/2025.7/api/python/io_functions.md#exportscene) * [core.save](/asset-transformer-sdk/2025.7/api/python/core_functions.md#save) * [core.load](/asset-transformer-sdk/2025.7/api/python/core_functions.md#load) ```python title="Python" # import root = io.importScene(filePath) # process model algo.repairCAD([root], 0.1, False) algo.tessellate([root], 0.2, -1, -1) # export io.exportScene(filePath, root) ``` ```csharp title="C#" // import uint root = pxz.IO.ImportScene(filePath); OccurrenceList rootList = new OccurrenceList(new uint[] { root }); // process model pxz.Algo.RepairCAD(rootList, 0.1, false); pxz.Algo.Tessellate(rootList, 0.2, -1, -1); // export pxz.IO.ExportScene(filePath, root); ``` *** ## Import | Format | Version | Extensions | Supported Platforms | Tessellated | BREP | PMI | Metadata | Alternative Importer option | | ------------------------ | ----------------------------------------------------------- | ------------------------------------------ | -------------------------- | ----------- | ---- | --- | -------- | --------------------------- | | 3DS | All Versions | .3ds | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ❌ | ✅ | ❌ | | 3MF | 1.2.3 | .3mf | 🪟 Windows🐧 Linux🍏 MacOS | ❌ | ✅ | NA | ❌ | ❌ | | ACIS | Up to 2023 | .sab.sat | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ❌ | ❌ | | Alias | Up to 2024 | .wire | 🪟 Windows | ✅ | ✅ | ❌ | ✅ | ❌ | | AutoCAD - 3D | Up to AutoCAD 2024 | .dwg.dxf | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | Autodesk Inventor | Up to 2025 | .iam.ipt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ❌ | ❌ | | Autodesk Navisworks | From 2012 to 2025 | .nwc.nwd | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ❌ | ✅ | ✅ | | Autodesk Navisworks | From 2012 to 2025 | .nwf | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ❌ | ✅ | ❌ | | CATIA V4 | Up to 4.2.5 | .dlv.exp.model.session | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | CATIA V5 | Up to V5\_6R2024 | .CATDrawing.CATProduct.CATShape | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | CATIA V5 | Up to V5\_6R2024 | .CATPart | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | ✅ | ✅ | ❌ | | CATIA V5 | Up to V5\_6R2024 | .CGR | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | CATIA V6 | Up to V5\_6R2024 | .3dxml | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | COLLADA | All Versions | .dae | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ✅ | | CSB | All versions | .csb | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ❌ | ❌ | | Creo - Pro/E | Pro/Engineer 19.0 to Creo 11.0 | .asm.neu.prt.xas.xpr | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | CreoView | Up to 8.1 | .pvs.pvz | 🪟 Windows | ✅ | ✅ | ❌ | ✅ | ❌ | | DGN | 7, 8 | .dgn | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ✅ | | E57 | All versions | .e57 | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ❌ | | FBX | All versions | .fbx | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ✅ | | GDSII | All versions | .gds | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ❌ | | GL Transmission Format | Version 2.0 only | .glb.gltf | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ✅ | ✅ | | I-deas | Up to 13.x (NX 5), NX I-deas 6 | .arc.mf1.pkg.unv | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | IFC | IFC2 Up to 2.3.0.1, IFC4 Up to 4.0.2.1 | .ifc | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ✅ | | IFC | IFC2 Up to 2.3.0.1, IFC4 Up to 4.0.2.1 | .ifczip | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ❌ | | IGES | 5.1, 5.2, 5.3 | .iges.igs | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ✅ | | JT | 8.1, 9.5, 10.0 | .jt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | NX - Unigraphics | UG11 to UG18, UG NX, NX5 to NX12, NX1847 to NX2412 | .prt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | OBJ | All versions | .obj | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ✅ | | PDF | All Versions | .pdf | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | PLMXML | All versions | .plmxml | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | PLY | All versions | .ply | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ❌ | | PRC | All Versions | .prc | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | PTS | All versions | .pts | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ❌ | | PTX | All Versions | .ptx | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | ❌ | ❌ | ❌ | | Parasolid | Up to 37.0 | .p\_b.p\_t.x\_b.x\_t.xmt.xmt\_bin.xmt\_txt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ✅ | | Pixyz | All versions | .pxz | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | RVM | All Versions | .rvm | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ❌ | ✅ | ❌ | | ReCap | Version 20.1.1 | .rcp | 🪟 Windows | ✅ | ✅ | ❌ | ✅ | ❌ | | ReCap | All Versions | .rcs | 🪟 Windows | ✅ | ❌ | ❌ | ❌ | ❌ | | Revit | 2015 to 2025 | .rfa.rvt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ❌ | ✅ | ✅ | | Rhino3D | From 4 to 8 | .3dm | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | ✅ | | STEP | AP 203 Ed1, Ed2, AP 214, AP 242 Ed1, Ed2 (beta), Ed3 (beta) | .step.stp | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | STEP | AP 203 Ed1, Ed2, AP 214, AP 242 Ed1, Ed2 (beta), Ed3 (beta) | .stepz.stpz | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | STEP/XML | All versions | .stpx.stpxz | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ✅ | | Sketchup | Up to 2021.0 | .skp | 🪟 Windows | ✅ | ✅ | ❌ | ❌ | ❌ | | Solid Edge | 1 to 20, ST1 to ST10, 2019 to 2025 | .asm.par.psm.pwd | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ❌ | ✅ | ❌ | | SolidWorks | From 97 up to 2025 | .sldasm.sldprt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | ❌ | | Stereo Lithography (STL) | All versions | .stl | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ✅ | | U3D | ECMA-363 | .u3d | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ❌ | | USD | All Versions | .usd.usda.usdc.usdz | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | ❌ | ❌ | ❌ | | VDA-FS | Version 1.0 and 2.0 | .vda | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ❌ | ❌ | | VRED | Up to 2024 | .vpb | 🪟 Windows | ✅ | ✅ | ❌ | ✅ | ❌ | | VRML | Version 1.0 and 2.0 | .vrml.wrl | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | ✅ | Legend: ✅ Supported | NA Not Applicable | ❌ Not Supported ## Export | Format | Version | Extensions | Supported Platforms | Tessellated | BREP | PMI | Metadata | | ------------------------ | ---------------- | ------------------- | -------------------------- | ----------- | ---- | --- | -------- | | CATIA V6 | Up to V5\_6R2024 | .3dxml | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | | COLLADA | All Versions | .dae | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | | FBX | All versions | .fbx | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | NA | ✅ | | GL Transmission Format | Version 2.0 only | .glb.gltf | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ✅ | | JT | 8.1, 9.5, 10.0 | .jt | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | | OBJ | All versions | .obj | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | | PDF | All Versions | .pdf | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | | PRC | All Versions | .prc | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | | Pixyz | All versions | .pxz | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ✅ | ✅ | ✅ | | Prefab | All Versions | .prefab | 🪟 Windows | ✅ | ❌ | ❌ | ❌ | | Stereo Lithography (STL) | All versions | .stl | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | NA | ❌ | | USD | All Versions | .usd.usda.usdc.usdz | 🪟 Windows🐧 Linux🍏 MacOS | ✅ | ❌ | ❌ | ❌ | Legend: ✅ Supported | NA Not Applicable | ❌ Not Supported