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3D Model Tools

View, measure, section and convert STEP/IGES/STL/OBJ/3MF/GLB/FBX/USD/3DM; mesh repair and simplification.

3D CAD covers the creation, viewing, conversion and repair of three-dimensional models in formats such as STEP, IGES, STL, OBJ, 3MF and glTF. These 22 tools let you view, measure, section, optimize and convert meshes and solid models, with most running locally in your browser. Local tools never upload your files and need no install or signup.

22 results

3D Model Tools3D Format ConverterConvert STL, OBJ, PLY, 3MF, GLB and glTF meshes (plus XYZ/PCD point clouds) to STL, OBJ, GLB, 3MF or PLY in your browser — free, no sign-up, nothing uploaded.LocalSTL · OBJ · PLY3D Model Tools3D Model ViewerOpen STL, OBJ, PLY, 3MF, GLB and glTF models in your browser — measure, annotate, section and screenshot. Free, no sign-in, no upload; all rendering is local.LocalSTL · OBJ · PLY3D Model ToolsCAD Export (OBJ/STL/GLB)Export STEP/IGES/BREP CAD files to OBJ, PLY, STL or GLB in your browser — free, no sign-up, nothing uploaded. Batch up to 10 files.LocalSTEP · IGES · BREP3D Model ToolsGaussian Splat ViewerView 3D Gaussian Splatting scenes (.ply, .splat, .ksplat) in your browser — read-only WebGL viewer, nothing uploaded, free with no sign-in.LocalPLY · SPLAT · KSPLAT3D Model ToolsGLB & glTF CompressorCompress GLB and glTF models in your browser — Draco or Meshopt geometry compression with a validation report. No upload; compression is a Pro feature.LocalGLB · glTF3D Model ToolsGLB OptimizerLossless GLB optimizer — dedup, weld, resample and prune, plus a validation report. Optional Meshopt, quantization, simplification. No upload; Pro feature.LocalGLB3D Model ToolsIGES to STL ConverterConvert IGES to STL for 3D printing in your browser — free, no upload, no sign-in. Binary STL with tessellation presets and mm/cm/inch output units.LocalIGES (5.1/5.3) · IGS · STL (binary)3D Model ToolsIGES File ViewerOpen IGES/IGS files (5.1/5.3) in your browser — measure, section, explode assemblies, screenshot. Parsed locally (OCCT WASM), no upload. Free, no sign-up.LocalIGES · IGS3D Model ToolsJSCAD Parametric ModelingCode parametric 3D models in JavaScript, tune them in a form panel and export print-ready STL — a free online OpenSCAD alternative. No upload, no sign-in.LocalSTL3D Model Tools3D Model AnalysisAnalyze STL/OBJ/PLY/3MF/GLB: triangle count, vertices, bounding box, area and volume, plus 8 printability checks. Free, runs in your browser, no upload.LocalSTL · OBJ · PLY3D Model ToolsMesh Boolean ToolBoolean union, subtract or intersect two meshes (STL/OBJ/PLY/3MF/GLB/GLTF) and export STL — watertight manifold results, live preview, no upload. Pro feature.LocalSTL · OBJ · PLY3D Model ToolsMesh Doctor for STLCheck STL/OBJ/PLY/3MF/GLB for holes, non-manifold edges, degenerate faces, watertightness; defects marked in viewport; weld-repair, export STL. Free, no upload.LocalSTL · OBJ · PLY3D Model ToolsHollow STL & Mesh ToolHollow a watertight STL, OBJ, PLY or 3MF mesh to a set wall thickness in your browser — SLA drain holes, before/after volume preview, no upload. Pro feature.LocalSTL · OBJ · PLY3D Model ToolsProSTL Mesh Repair for Large FilesServer-side repair of large STL/OBJ/PLY/GLB meshes: fill holes, fix normals, remove degenerates, convert formats; before/after report. Sign-in and cloud quota.CloudSTL · OBJ · PLY3D Model Tools3D Model ScreenshotRender a 3D model to a clean PNG preview image for listings, catalogs and docs — auto-framed, three sizes. Free, no sign-in, no upload; runs in your browser.LocalSTL · OBJ · PLY3D Model ToolsMesh SimplifierMesh simplify online — decimate by ratio or exact target face count, see before/after triangle and vertex stats, export STL. Free, no upload.LocalSTL · OBJ · PLY3D Model ToolsSTL SlicerSTL slicer online — slice meshes by layer height, preview each layer contour, export layered SVG or outline G-code. No upload; Pro.LocalSTL · OBJ · PLY3D Model ToolsSTL Mesh SmootherSmooth STL, OBJ, PLY, 3MF or GLB meshes online: Taubin (volume-preserving) or Laplacian, live preview, volume-change readout, export STL. Free, no upload.LocalSTL · OBJ · PLY3D Model ToolsSTEP to GLB ConverterConvert STEP to GLB in your browser — free, no upload, no sign-in. Web- and AR-ready glTF binary with selectable mm/cm/m units and four tessellation presets.LocalSTEP · STP · GLB3D Model ToolsSTEP to STL ConverterConvert STEP to STL for 3D printing in your browser — free, no upload, no sign-in. Binary STL with four tessellation presets and mm/cm/inch output units.LocalSTEP · STP · STL3D Model ToolsSTEP File ViewerOpen STEP/STP files (AP203/AP214/AP242) in your browser: measure, section, explode and screenshot. Parsed locally (OCCT WASM), no upload. Free, no sign-up.LocalSTEP · STP3D Model ToolsUSDZ Converter for ARConvert STL/OBJ/PLY/3MF/GLB/glTF to USDZ for AR Quick Look on iPhone/iPad — preview first, then generate and download. Runs locally, no upload. Pro feature.LocalSTL · OBJ · PLY