Free Online Converter
Convert STL to GLB
Drop a .stl file, get a .glb back in seconds. Runs entirely in your browser — no upload, no signup, no watermark.
How to convert STL to GLB
- Drag your
.stlfile into the box above (or click to browse). - Preview the model in the viewer — drag to rotate, scroll to zoom.
- Click Convert & Download .glb. The
.glbfile lands in your downloads folder.
Conversion runs in your browser via three.js. Your file never leaves your device — there's no upload, no server, and nothing is stored.
Frequently asked questions
How do I convert STL to GLB?+
Drop your STL file into the box above, check it in the 3D preview, then click Convert & Download .glb. The whole conversion runs in your browser, so there is nothing to install and nothing to upload.
Is there a free STL to GLB converter with no signup?+
This is one. There is no account, no watermark, no email step and no file-size paywall — just drop the file and download the GLB.
Can I convert STL to GLB online without installing software?+
Yes. The converter runs entirely in the browser using WebGL, so it works on Windows, macOS, Linux and mobile without any download. Your file is read on your own device and never sent to a server.