View and convert 3D and CAD files in your browser

What opens here

Drop any of these files on the page. It opens in the tool that reads it, and the tool tells you what it can save.

Your file stays on your device

Most online converters upload your file to a server, work on it there and send a result back. tab3d does the work in your browser instead, with the same kind of code a desktop program would use. The file is read from your disk into the page's memory and never travels anywhere.

That is why there is no size limit set by a server, no waiting in a queue and no account. It is also why a design you have not released yet is safe to open here. How your files stay private explains the details and shows how to check them yourself.

All tools

View

• STL viewerMeasure a model and check it for holes
• STEP viewerOpen STEP and STP assemblies without CAD
• IGES viewerOpen IGES and IGS surfaces and solids
• DXF viewerCheck a drawing, its layers and its size
• G-code viewerStep through layers and read time and filament
• GLB viewerPlay animations, try material variants, check the file
• OBJ viewerWith its materials and textures, and measured
• Point cloud viewerLAS, PLY, PCD and XYZ scans, colored by height or class
• 3MF viewerPlates, objects and the colors they are painted in
• FBX viewerModels from Blender, Maya and 3ds Max, with their animations

Convert

• 3MF to STLWorks with Bambu Studio and MakerWorld projects
• STL to STEPA solid with clean flat faces for your CAD
• 3MF to STEPEach object a named solid, in its filament's color
• STEP to STLChoose the mesh quality, keep the real size
• STEP to OBJEach part a named object, its colors in a material file
• STEP to GLBOne file with the part names and colors, for 3D scenes
• STEP to 3MFEach part an object with its name, ready for a slicer
• OBJ to STLA mesh for your slicer, standing the right way up
• GLB to STLA printable mesh in millimeters, from any GLB
• GLB to OBJEach mesh a named object, its colors in a material file
• STL to OBJThe same triangles with their corners shared, numbers kept
• STL to 3MFOne file for your slicer, in millimeters, several STLs as one
• OBJ to GLBOne file with the colors, in meters, Y up
• PLY to STLA scan or a mesh as an STL for your slicer
• STL to GLBFor the web, AR and game engines, at the real size
• GLB to glTFThe JSON, its binary and its textures as separate files
• OBJ to 3MFA slicer project in millimeters, each color a part
• glTF to GLBThe .gltf, its .bin and its textures in one file
• OBJ to glTFThe mesh and its colors as glTF, in meters, Y up
• STL to PLYA smaller mesh with shared corners, for MeshLab and scanners' software
• FBX to OBJEach mesh a named object, its colors in a material file
• FBX to STLA printable mesh in millimeters, from any FBX
• FBX to GLBMaterials, textures, skeletons and animations in one file
• GLB to FBXIts tree, materials, pictures and animations, in centimeters
• OBJ to FBXA model and a material for each color, in centimeters, Y up
• STL to FBXFor game engines and animation programs, at the real size
• Image to STLA lithophane, a relief or a raised logo
• SVG to STLRaise a drawing into a solid you can print
• SVG to DXFThe right size in mm, colors kept as layers
• PNG to DXFTrace a logo or drawing into clean outlines
• DXF to SVGThe drawing at its real size in mm, each layer a group
• DXF to PDFTo scale on A4 or Letter, with the layers kept
• STL to SVGA model's outline or section, at its real size
• STL to DXFA profile for a laser cutter, from a 3D model
• DXF to STLRaise a drawing's closed outlines into a solid

Tools

• STL repairClose holes and turn flipped faces
• STL editorResize, turn, mirror and merge STL files
• Reduce STL file sizeFewer triangles, a smaller file, nearly the same shape
• GLB compressorA smaller GLB, with its materials and animations
• 3D print cost calculatorFilament, power, wear, failures and labor

If your file won't open

Some formats belong to one company and can only be read by its software. For those, this is the shortest route, and each guide says more.

• DWG. Convert it to DXF with the ODA File Converter, free for non-commercial use, then open the DXF in the DXF viewer. To only look at it, Autodesk Viewer opens DWG online, once you sign in and upload it to Autodesk. How to open DWG files.
• SolidWorks (SLDPRT, SLDASM, SLDDRW). Ask the sender to export a STEP file, which opens in the STEP viewer, or open the file in eDrawings Viewer, which is free from Dassault Systèmes. How to open SolidWorks files.
• SketchUp (SKP). SketchUp for Web, free for non-commercial use with a Trimble ID, opens it from Trimble's cloud storage and downloads it as an STL, which opens in the STL viewer. How to open SketchUp files.
• Revit, Inventor and Fusion files. Autodesk Viewer shows them online, once you sign in and upload them to Autodesk. For an Inventor or Fusion design that opens here, ask for STEP; for a Revit model, IFC. Autodesk's other formats.
• Blender files. Export STL, OBJ, glTF or FBX from Blender, which saves all four. Those open here.
• Files that used to open in Microsoft 3D Viewer. The app was removed from the Microsoft Store on July 1, 2026. STL, OBJ, GLB, PLY and 3MF files open on this page instead. Microsoft 3D Viewer alternatives.

Questions