GLB Viewer is a free tool. Upload a GLB or glTF file to this GLB viewer to rotate and zoom the model, read its size and triangle count, and save the shape as an STL file.
Runs in your browser · your file is not uploaded · no sign-in needed
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Your 3D Model Will Appear Here
Fill in the options on the left, then press the button. The work is done in your browser.
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Drag & drop your file here or click to browse
A GLB viewer lets you open a GLB or glTF file in your browser and look at its shape from every angle. Rotate and zoom the model, read its size and triangle count, and save the shape as STL, OBJ, or 3MF. It is useful for checking a model before printing or for a quick look without opening full 3D software.
Select Upload a GLB File and add the model you want to check. It loads directly in your browser, and the file is never sent to a server, so it stays on your device.
Drag to rotate the model and scroll to zoom in on details. Check the size and triangle count shown alongside the preview to see how complex the mesh is before you use it elsewhere.
Choose View Model to load the file, then save it as STL, OBJ, or 3MF for 3D printing. Keep in mind colours and textures are not kept, since the saved files contain the shape only.
Before you commit to printing a model you downloaded, open it in the viewer to confirm the shape, proportions, and triangle count look right. This catches an obviously broken or wrong file before you convert or slice it.
GLB and glTF files often carry colour and texture data that a slicer does not need. Save the shape as STL when you only want the geometry for 3D printing, without the extra file weight of textures.
A high triangle count can slow down other tools or your printer's software. Check the count shown in the viewer first, so you know whether a model needs simplifying before you convert or edit it further.
It shows the 3D shape of a GLB or glTF file so you can rotate and zoom it, along with its size and triangle count. It does not edit the file, so use it for checking a model rather than changing it.
No. It runs fully in your browser, so no account is needed and no credits are used. Your file is never uploaded to a server, which keeps it private to your device while you view it.
The saved STL, OBJ, and 3MF files contain the shape only, not colours or textures, since those formats are aimed at 3D printing rather than displaying appearance. If you need the original look, keep the GLB file itself.
GlTF stores a 3D model as separate text and data files, while GLB packs the same information into a single binary file. Both describe the same kind of model, so a GLB viewer can generally open either.
It is the number of flat triangular faces that make up the mesh surface. A higher count usually means finer detail but a larger file and heavier processing, while a lower count means a simpler, lighter shape.
No, the viewer is for looking at and saving a model, not editing it. To change the size, rotation, or mirroring of the shape, convert it to STL first and use a dedicated editing tool on that file.
Open an STL file the same way to check its shape before printing or converting it.
Convert the shape you saved from this viewer between STL, OBJ, 3MF, and GLB formats.
Turn a 3MF file into STL if that is the format your slicer or printer expects.
Fix mesh problems like holes or flipped faces once you have saved the shape as STL.
Your file stays on your device. It is not uploaded.