STL
Stereolithography mesh — the standard format for 3D printing.
LinksConverterSTL to GLB Converter
Convert an STL into a compact GLB (binary glTF) — the standard format for showing 3D models on the web and in AR. GLB loads fast in browsers, model-viewer, three.js, and Google/Apple AR Quick Look.
Drag & drop a file hereor click to browse from your device
When to convert STL to GLB
- Embed a 3D model on a website with <model-viewer>
- Use a print model in a three.js or React-Three-Fiber scene
- Preview a design in AR on a phone
About the STL and GLB formats
GLB
Binary glTF — compact 3D model for the web and AR.
Why use LinksConverter for this conversion
Fast cloud pipeline
Server-side ffmpeg + yt-dlp on auto-scaling workers. Most files finish in seconds, not minutes.
ClamAV scanned
Every uploaded or fetched file is virus-scanned before it ever reaches your download.
Auto-deleted after 2 hours
Files live on encrypted S3 storage for 2 hours, then are permanently purged. We never log file contents.
No sign-up, no watermark
Free for up to 10 conversions per hour with no account. Pro unlocks larger files and priority queue.
How to convert STL to GLB
Upload or paste a STL link
Drop a STL file from your device, or paste a public URL pointing to the STL you want to convert.
Confirm GLB as the output format
The output is pre-set to GLB. You can adjust quality or bitrate in the advanced options if you need a smaller file.
Start the conversion
Click Convert. Our cloud workers fetch the STL, scan it for malware, and run the STL → GLB pipeline.
Download your GLB file
A one-time pre-signed link appears as soon as the GLB is ready. The file is automatically deleted from our storage 2 hours later.
STL to GLB — Frequently asked questions
Yes — GLB opens in any glTF viewer, the <model-viewer> web component, three.js, and Windows 3D Viewer. STL has no materials, so the GLB shows the bare mesh, which you can texture later.
Yes. LinksConverter converts STL to GLB for free with no email, sign-up, or watermark. Anonymous users get up to 10 conversions per hour; the optional Pro tier raises that to 500 and adds priority queue access.
Yes. Files are processed in an isolated worker, scanned with ClamAV antivirus, served via a one-time pre-signed URL, and automatically purged from our S3 storage after 2 hours. We never log file contents and request URLs are masked in our server logs.
Free conversions accept files up to 500 MB. Pro accounts can convert up to 5 GB in a single job. Very large files automatically chunk the upload to avoid browser timeouts.
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