Made for 3D Printing
3D printing & additive: fix the mesh before you expect a first-time print
AI-generated or scanned meshes often have holes, non-manifold edges and debris — inspect, repair, scale and slice-preview in the browser.
Mesh inspection and repair run locally, models are not uploaded
Fix non-manifold, holes and floating shells; hollow, smooth and simplify
Scale, unit conversion and slice preview to rule out print failures
Pre-print repair
Diagnose and repair non-manifold, holes and debris into a sliceable mesh.
STL Mesh Repair for Large FilesCloudServer-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.Mesh Doctor for STLLocalCheck STL/OBJ/PLY/3MF/GLB for holes, non-manifold edges, degenerate faces, watertightness; defects marked in viewport; weld-repair, export STL. Free, no upload.3D Model AnalysisLocalAnalyze STL/OBJ/PLY/3MF/GLB: triangle count, vertices, bounding box, area and volume, plus 8 printability checks. Free, runs in your browser, no upload.Center STL on the BedLocalCenter an STL on the build bed, drop it to Z=0, scale to an exact target height and export print-ready STL — local in your browser, free, no upload.
Scale and lighten
Unit scaling, simplification, smoothing and hollowing.
Scale & Resize STL FilesLocalScale or resize STL/OBJ/PLY/3MF/GLB by a factor or per axis — mm↔inch presets (×25.4), before/after bounding-box check, STL export. Free in browser, no upload.Mesh SimplifierLocalMesh simplify online — decimate by ratio or exact target face count, see before/after triangle and vertex stats, export STL. Free, no upload.STL Mesh SmootherLocalSmooth STL, OBJ, PLY, 3MF or GLB meshes online: Taubin (volume-preserving) or Laplacian, live preview, volume-change readout, export STL. Free, no upload.Hollow STL & Mesh ToolLocalHollow 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.
Slice and format
Slice preview, format conversion and viewing across STL/3MF/GLB.
STL SlicerLocalSTL slicer online — slice meshes by layer height, preview each layer contour, export layered SVG or outline G-code. No upload; Pro.3D Format ConverterLocalConvert 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.STEP to STL ConverterLocalConvert 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.3D Model ViewerLocalOpen 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.
Server-side repair for large meshes
Pro is $15/mo: 500 cloud credits/month and 100 MB per file for very large or complex meshes; local repair stays free.