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3D Model Viewer

Open 3D models in STL, GLB (glTF), OBJ, FBX or PLY right in your browser, with no 3D software. Rotate them, check the size, volume and holes, and save the current view as a PNG or convert the model to GLB, STL or OBJ. Your files stay on your device.

On-device・No uploadDesktop recommendedWorks offline

Your files and input are processed only inside your browser on this device and are never uploaded to our servers.

Drop a 3D model here, or choose a file

or

glTF, GLB, OBJ (with MTL and images), STL, FBX, PLY. For .gltf textures or .bin files, drop the whole folder. CAD formats such as STEP and IGES cannot be opened.Accepts: GLB, glTF, OBJ, STL, FBX, PLY (ZIP also accepted)Paste (Ctrl+V) also works

How to use

  1. part.stl
    model.glb

    Open a 3D model

  2. 3D view (rotate, zoom)size and volume too

    Rotate it and check the size

  3. render.pngtransparent OK
    part.obj

    Convert to PNG, GLB, STL, OBJ

Open and rotate a 3D model, check its size, then convert to PNG and more

  1. Drop a 3D model file here, or click “Choose files”.

  2. For glTF with textures or OBJ with an MTL file, drop the related files together with their folder.

  3. Drag to rotate and scroll to zoom. Use the Front, Top, Side and Isometric buttons to set the view.

  4. Check the vertices, faces, size, volume and holes in the information panel. The unit is the unit you read the file’s numbers in.

  5. Click “Export” to save the current view as a PNG, or convert the model to GLB, STL or OBJ.

What it does

Rotate and inspect without software

Rotate, zoom and pan, with Front, Top, Side and Isometric views. Wireframe and normal views help you check the shape.

Size, volume and holes

Shows the bounding box, vertex and face counts, and the number of materials and textures. For closed models it estimates volume and surface area, and it checks for holes (open edges).

Export PNG, GLB, STL or OBJ

Save the current view as a PNG with a transparent option. Convert the model to GLB, STL or OBJ. The conversion runs in your browser.

No upload

Loading, display and conversion all run in your browser, so drawings and prototypes never leave your device.

Use cases

  • Check the size and volume of an STL file before sending it to a 3D printer
  • Look at a GLB file you received, without installing software
  • Convert an OBJ model to STL for a printing service
  • Save the view of a 3D model as a PNG for a document or a product page

Supported formats

Input

STL (binary or ASCII)glTF (.gltf + .bin + images)GLBOBJ (with MTL and images)FBXPLY

Output

PNG (transparent option)GLBSTL (binary)OBJ

Capability matrix

FeatureSupportNotes
Open and view STL, GLB, glTF, OBJ, FBX and PLYSupported—
Rotate, zoom and pan (mouse, touch, keyboard) and view presetsSupported—
Wireframe, normals, grid, axes and background colourSupported—
Animation playback for glTF and FBXSupported—
Size, vertex and face counts, materials and texturesSupported—
Volume and surface area (approximate, closed models)PartialVolume is not calculated for models with holes. Above 1 million faces, the hole check is skipped
STL dimensions (unit)PartialSTL files do not record a unit. Values in the unit you choose are estimates
Export to PNG, GLB, STL and OBJSupportedSome materials and animations may be lost in GLB and OBJ
glTF compressed with Draco or meshoptNot supportedOpen an uncompressed copy, for example one exported without compression
MTL and image loading (OBJ and glTF textures)PartialOnly when the related files are dropped together with their folder
FBX loadingPartialSome FBX versions do not open. Convert them to GLB or another format first
Editing (shape, colour or material changes)Not supportedView, measure and export only
CAD formats (STEP, IGES, DWG, DXF and others)Not supportedExport the model to a 3D format first
Exact dimensions and tolerance checksNot supportedDisplayed dimensions are for reference. Do not use them as manufacturing tolerances
Fetching textures or data from external URLsNot supportedExternal references are not fetched. Drop the related files with their folder instead

Limits & notes

  • Up to 300 MB per file and 5 million faces (triangles).
  • The hole check runs for models up to 1 million faces.
  • PNG export is limited to 16.77 million pixels (for example 4,096 × 4,096).
  • One model is opened at a time. When there are several, the first one in this order is opened: glb, gltf, fbx, obj, stl, ply.
  • Works on smartphones. Large models can be slow to rotate and zoom, so a PC is recommended for them.

Privacy & safety

Loading, display and export all run in your browser. The 3D model and the exported images are never sent to a server.

FAQ

Can I open an STL file without software?
Yes. STL files (binary or ASCII) open in your browser, where you can rotate and zoom them, and check the size and volume.
What unit are STL dimensions in?
STL files do not record a unit. Choose the unit in “Unit of the values” to say how the file’s numbers should be read. Values are estimates in the unit you choose.
My glTF or OBJ model shows up white. Why?
If the texture images or the .bin file are not found, the model is shown in plain white. Drop the related files together with their folder. External URLs are not fetched.
Can I open STEP or IGES files?
No. CAD formats cannot be opened. Export the model from your CAD software as STL, GLB or OBJ, then open that file.
Are the volume and surface area exact?
They are approximations calculated from the triangles of a closed model. Volume is not calculated for models with holes. Do not use them as manufacturing tolerances.
Are my files or exported images uploaded?
No. Everything from loading to export happens in your browser.

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