Private browser tool

Online STL Viewer

Inspect an STL locally with orbit controls and a clean shaded surface. Your file stays on your device.

No signup Full-quality download One file at a time

Processed privately in your browserNo upload · No account · Unlimited

Drop your file here

.stl · local processing

3D preview appears here

How it works

1
Choose a file
Select .stl from your device.
2
Process locally
Processing runs in browser memory without an upload.
3
Download and leave
Get the inspected result without giving Renderbound an email address.

Common questions

Do I need an account?

No. Free tools finish with a download and never ask for an email address.

Where is my file processed?

This tool runs inside your browser. Renderbound never receives the source file.

How long are server files kept?

Temporary inputs and outputs are deleted after download where possible, with a 24-hour lifecycle rule as the hard backstop.

Fix common STL mesh problems before slicing or import.

Reduce triangle count while keeping the model’s silhouette.

Inspect GLB and glTF assets in a fast browser viewer.