Free tool
3DM, STL and GLB viewer
Open a jewellery CAD file in your browser and turn it in 3D, with its parts and its size in millimetres. No install, no account, and the file never leaves your computer.
Drop a 3D file here
3DM, STL, GLB, OBJ, FBX, PLY, 3MF and more. Your file stays on this computer: it is read and drawn here in your browser and never uploaded.
Which files open
The viewer uses the studio's own importers, so a file that opens here opens in Jart. What each format keeps. To change a file's format, use the free 3DM to STL, 3DM to GLB or STL to GLB converter.
Rhino and Matrix (3DM)
A 3DM file shows the render meshes Rhino saved with it. If a 3DM opens empty or with parts missing, open it in Rhino, shade the viewport so every object has a render mesh, and save without Save small. Curves, points and construction geometry are not drawn. Objects on hidden layers stay hidden, and object names come through: Jart uses them to tell metal from stones.
STL
An STL is one bare mesh: no materials, no part names and no units. The viewer draws it in a neutral metal and takes its numbers as millimetres, as casting and printing files usually are.
GLB and glTF
GLB carries its own materials and textures in one file, in metres by the format's definition; the size is shown in millimetres. For a .gltf with separate .bin and texture files, choose them all together.
Others
OBJ (with its .mtl), FBX, PLY, Collada, 3MF, AMF, USD and USDZ, 3DS, VTK and VRML open too. STEP, IGES and native ZBrush or proprietary CAD files need converting to one of these first.
Private by design
Nothing is uploaded. The page reads the file with your browser's file access and draws it with your own graphics card, then forgets it when you close the tab. Our server sees only that this page was loaded, as with any web page.
From a preview to a photograph
This viewer shows the shape. To show the piece the way a client will see it, open the same file in the studio.
In Jart, parts are recognised as metal or stone from their names and shapes, and you choose from real metals and gemstones with true refraction and fire. Render traces light on your own graphics card for a photoreal still, and you can export turntable videos, view it in AR on a phone, or send a link your client can turn in 3D. Design Facts adds the metal weight, the stones with their carat, and the ring size. All of it is free to start, with no account.
More free tools
No account, nothing to install. The help centre explains the studio itself.
- Metal weight calculatorGrams and pennyweights of a design in every alloy
- Ring size converterUS, UK, EU and inside diameter, both ways
- 3DM to STL converterA Rhino file to a binary STL in millimetres
- 3DM to GLB converterA Rhino file to a GLB with its part names, at true size
- STL to GLB converterAn STL to a GLB for web viewers and AR
Render it photoreal.
Open the same file in Jart, choose the metal and the stones, and render a photograph on your own graphics card. No account needed.