Turn glTF 3D models into STL. It is converted in your browser, so the file never leaves your device.
Drop glTF files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop glTF files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. There is nothing else to set. The work happens in this tab.
Save the STL, or download everything as one ZIP if you converted several files.
The glTF to STL converter is part of this page and runs inside your browser. Your 3D models are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
A .gltf is several files, and the geometry is in a separate binary file. STL is accepted by every 3D printer and slicer. glTF is at home in 3D on the web and in real-time engines; STL is the usual choice for 3D printing.
The model is converted as triangles: lines and points are dropped, positions are used as they are, and no axis conversion is applied, so a model that is Y-up in glTF and Z-up in STL, OBJ and PLY is written exactly as it was read. Textures are not carried over, a glTF that points at a separate .bin file cannot be read from a single dropped file, and Draco or meshopt compressed geometry is refused with a message asking for an uncompressed export. STL stores geometry only, so vertex colours and materials are dropped. Models up to 3,000,000 triangles are accepted.
glTF is called the JPEG of 3D. A .gltf file is JSON describing a scene, with meshes, materials, animations and cameras, usually pointing at a separate binary data file and texture images. Version 2.0, from 2017, is an ISO standard.
Opens in Blender, web 3D viewers, game engines, Windows 3D Viewer and AR tools
glTF converterSTL describes a surface as a list of triangles and nothing else: no colour, no materials, no units. That simplicity made it the standard input of 3D printers and slicing software. It exists as binary and as text; the binary one is much smaller.
Opens in Every slicer and 3D printing program, CAD tools and Windows 3D Viewer
STL converter| GLTFglTF 3D scene | STLSTL 3D model | |
|---|---|---|
| Stands for | GL Transmission Format | Stereolithography file |
| Type | 3D scene | 3D model |
| Compression | None (JSON text) | None |
| Introduced | 2015, by the Khronos Group | 1987, by 3D Systems |
| Opens in | Blender, web 3D viewers, game engines, Windows 3D Viewer and AR tools | Every slicer and 3D printing program, CAD tools and Windows 3D Viewer |
| Best for | 3D on the web and in real-time engines | 3D printing |
| File extension | .gltf | .stl |
No. The glTF to STL conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
No further quality is lost: STL stores the decoded audio exactly. The result is identical in content.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the glTF file, press Convert and save the STL. There is nothing to install.
Yes. Models up to 150 MB and 3,000,000 triangles are accepted; a larger one is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.