Fomrix STL Viewer

Fomrix STL Viewer is a free browser-based tool for inspecting STL files before slicing. Open binary or ASCII STL models locally, rotate and zoom the mesh, and review triangle counts and model-space dimensions without creating an account or using generation credits. The viewer does not modify the original file. It is a visual inspection tool, not a guarantee of printability: confirm units, scale, wall thickness and supports in your slicer.