To convert STL to GLB, choose your STL 3D models above, adjust the options if needed and press "Convert to GLB". The GLB downloads instantly: free, with no sign-up, and the file never leaves your device.
About the STL to GLB Converter
Need to turn a STL file into GLB? This free converter changes STL 3D models into GLB in a few seconds, right in your browser. People usually convert because STL has no colours or materials and is heavy to show on the web, while GLB gives you a single-file GLB for web and AR. GLB files open in Blender, Windows 3D Viewer, Three.js, Babylon.js, Unity and model-viewer.
Models are loaded and exported with three.js, the most widely used open-source 3D library for the web. Because everything happens on your own device, your 3D models are never uploaded, stored or seen by anyone else, which makes it safe for client prototypes and unreleased product designs.
What to expect: geometry, normals and UV coordinates are converted, and the model is not rescaled.
How to use the STL to GLB Converter
- Click "Choose files" or drag your STL 3D models onto the box. You can add several at once.
- No settings are needed.
- Press "Convert to GLB". The conversion runs on your device and shows its progress.
- Download each GLB file, or use "Download all (ZIP)" when you converted several.
- Open the result in Blender or Windows 3D Viewer to check it; your original STL is never changed.
Tips & benchmarks
- GLB packs geometry and materials into one file, ready for web viewers and AR.
- STL and OBJ files have no units; most slicers assume millimetres, so check the size after importing.
- Keep the file name simple (letters, numbers and hyphens) if you plan to upload the GLB to a website or government portal.
Frequently asked questions
How do I convert STL to GLB?
Click "Choose files", select your STL 3D models, adjust the options if you want, and press "Convert to GLB". The GLB downloads immediately; with several files you can download everything as one ZIP.
Is this STL to GLB converter free and safe?
Yes. It is completely free, with no sign-up, no daily limit and no watermark. The conversion runs inside your browser, so your 3D models never leave your phone or computer and nothing is stored on News Appite's servers.
Are textures and materials kept?
Basic materials and vertex colours are carried over where both formats support them. External texture image files referenced by OBJ or glTF are not bundled unless they are embedded in the source.
Can I convert several STL files at once?
Yes. Add as many STL files as you like; they are converted one after another and you can download them individually or together as a ZIP.
Does it work on iPhone, Android and Mac?
Yes. The converter works in any modern browser, including Chrome, Safari, Edge and Firefox, on Android, iPhone, iPad, Windows, macOS and Linux. No app is needed.
What is the difference between STL and GLB?
STL (Stereolithography) is a 3D printing mesh best suited to 3D printing, slicers such as Cura and PrusaSlicer, and CNC. GLB (Binary glTF) is a single-file 3D scene best suited to web 3D viewers, AR on Android and Facebook, Three.js and Babylon.js.
Is there a file size limit?
There is no upload limit, because nothing is uploaded. The practical limit is your device's memory: files of a few hundred megabytes work on most computers, and phones handle smaller files comfortably.
How do I convert STL to GLB in Python?
Use trimesh: trimesh.load('input.stl').export('output.glb'). If you just need the file, this converter does it in the browser without writing any code.
STL ko GLB kaise kare?
Is page par "Choose files" dabaiye, apni STL file chuniye aur "Convert to GLB" par click kijiye. GLB file turant download ho jaati hai. Ye bilkul free hai, sign-up nahi chahiye, aur aapki file kisi server par upload nahi hoti.
STL vs GLB: format comparison
| STL | GLB | |
|---|---|---|
| Full name | Stereolithography | Binary glTF |
| Type | 3D printing mesh | Single-file 3D scene |
| Created by | 3D Systems, 1987 | Khronos Group, 2017 (glTF 2.0) |
| Compression | Binary or ASCII triangles | Binary |
| File extension | .stl | .glb |
| MIME type | model/stl | model/gltf-binary |
| Best for | 3D printing, slicers such as Cura and PrusaSlicer, and CNC | Web 3D viewers, AR on Android and Facebook, Three.js and Babylon.js |
| Opens in | Cura, PrusaSlicer, Bambu Studio, Fusion 360, Tinkercad and Blender | Blender, Windows 3D Viewer, Three.js, Babylon.js, Unity and model-viewer |
What is a STL file?
STL was created by 3D Systems in 1987 for the first stereolithography printers. It describes a surface as raw triangles with no colour or units, and it is still the default file for 3D printing.
What is a GLB file?
GLB is the binary, single-file version of glTF 2.0, often called the "JPEG of 3D". Meshes, materials and textures are packed into one compact file that loads fast on the web, in AR and in game engines.
Need it the other way round? Use the GLB to STL Converter.
More STL converters
Convert other formats to GLB
Related searches
All tools on News Appite are free to use for personal and commercial work. Calculations and file conversions are performed in your browser; the redirect and cache checkers make a single request to the URL you enter and store nothing. Found a bug or want a new tool? Tell us.