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 .stl without giving Renderbound an email address.
Local first + server fallback
STL Repair
Run a fast local inspection first. Watertightness, inverted normals, degenerate faces, and small holes are repaired locally when possible, with an isolated server fallback for difficult meshes.
No signup Full-quality download One file at a time
Processed privately in your browserNo upload · No account · Unlimited
.stl
Your finished file appears here.
The source never travels across the network.
Local repair did not solve it? Use the robust server fallback
Compatibility processor · maintenance
Processing is being prepared.
This page is live, but uploads stay disabled until the private worker, deletion controls, and output checks pass Renderbound’s launch gate.
Use a browser-local toolCommon 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.