No. The file is read and compiled by OpenSCAD running as WebAssembly in your browser tab, and the STL is generated locally. Nothing is sent to a server, so private designs stay private.

SCAD to STL Converter

Q: How do I convert a SCAD file to STL?

Drop the .scad file on this page, set any parameters, and click Download STL. OpenSCAD runs in your browser and renders the code into a triangle mesh, which is what an STL is. You do not need to install OpenSCAD.

Q: Why does my file show an error about a missing file?

Your file loads another file with include or use, and that file was not selected. Select the main file and every file it includes in one go, or drop a ZIP of the project folder. The page lists the files it could not find.

Q: Can I change the model's size before converting?

Yes, if the file defines Customizer parameters, such as width = 40; // [20:80]. They appear as sliders and fields. Files without parameters render as written. To scale the finished STL instead, use the Resize STL tool.

Q: Does it support BOSL2 and other libraries?

BOSL2 is built in. Other libraries, such as MCAD or a library you downloaded, must be included in the files you open, in the same folder layout the include statements expect.

Q: Why does it say STL requires nonempty 3D geometry?

Usually the file only makes 2D shapes, such as square(), circle() or text(), without linear_extrude() or rotate_extrude(). STL needs 3D geometry. Open the file in the full OpenSCAD Playground and switch to 2D to export SVG or DXF.

Turn an OpenSCAD .scad file into a printable STL without installing OpenSCAD. Set the model's parameters, check the size in 3D, and download.

Drop a .scad file here

Add any files it includes in the same drop, or a project ZIP. Nothing is uploaded.

How it works

Drop your .scad file on the box above, or click Open .scad file. If it uses include or use, select those files in the same drop, or open the project ZIP.
The model renders in your browser. If the file has Customizer parameters, they appear as sliders and fields next to the preview.
Change the parameters. The preview updates after each change, and the size readout shows the width, depth and height in millimeters.
Click Download STL, or 3MF for slicers that prefer it. The file is named after your .scad file, so box.scad becomes box.stl.

What happens to your file

A .scad file is code, not a mesh. To get an STL, OpenSCAD has to run that code and turn the result into triangles. This page does that with OpenSCAD 2025.01.19 (Manifold backend) compiled to WebAssembly, so it runs in your browser tab and the file is never uploaded. The pinned BOSL2 library is included, so include <BOSL2/std.scad> works.

To edit the code itself, use Open it in the full OpenSCAD Playground. Your files and parameter values carry across. To open a file just to read and preview it, see how to open a .scad file. To resize the STL you downloaded, use Resize STL. To check it for holes and flipped normals, use the STL viewer.

SCAD to STL Converter

How it works

What happens to your file

FAQ

How do I convert a SCAD file to STL?

Why does my file show an error about a missing file?

Can I change the model's size before converting?

Does it support BOSL2 and other libraries?

Why does it say STL requires nonempty 3D geometry?

Is my file uploaded?

See also