Free CAD viewer
Neckog Viewer
Open a STEP, STL, OBJ or GLB file right in your browser and actually work with it — measure point to point in millimetres, section it open on any axis, explode an assembly, and mark it up to send on. Nothing installs, and it stays free with a Neckog account.
Open your first file free
A free account is all it takes — then drop in a STEP, STL, OBJ or GLB and it opens on this page. No card, no install, no upload limit beyond the file size.
Measure
Point-to-point distances on the surface, in millimetres — with the body's volume, area, and triangle count alongside.
Section & explode
Cut the model open on any axis to check a wall, or pull an assembly apart to see how it goes together.
Mark it up
Draw on the view, save a camera angle, and export a PNG for whoever has to act on it.
Need the part made, not just looked at? MoldLab turns the same file into a printable mold, or order custom manufacturing and we'll make it for you.