Terms

It reads a 3D file in the browser and reports what it finds: geometry counts, the bounding box, materials and their textures, animation clips, and references that did not resolve. Inspection only — no conversion, no repair, and no export of the model itself.

No rights are taken over a model opened here. Nothing is uploaded and nothing is stored, so there is nothing for the site to license, copy or pass on. What happens to the file afterwards is entirely up to whoever holds it.

A model can open cleanly here and still fail at the machine: self-intersections, non-manifold edges, walls thinner than the nozzle, a solid modelled inside out, a scale in the wrong unit. Those are properties of the file and of the printer, and the viewer does not evaluate them. Whether a part prints belongs to the slicer and the printer, not to this page.

Dimensions appear in the unit the file declares. STL declares none, so a 20-unit cube may be 20 mm or 20 inches, and the file cannot settle which. Each format page says what its container carries. Comparing a number against the intended part is the reader’s step.

Open files you have the right to open. Do not use the site to attack the host that serves it, and do not use it for content that is unlawful where you are.

The site is provided as it is, without warranty of any kind. To the extent the law allows, no liability is accepted for a decision taken from what is displayed — a print that failed, a model sent to a client, a part made to the wrong size.

The date below is the last review. Continuing to use the site after the text changes means the current text applies. How files are handled is described on the privacy page.

Last reviewed 7 November 2026.