Drop in STEP or IGES files, or a whole folder, and get STL files back. Conversion runs in the browser through occt-import-js (OpenCascade compiled to WebAssembly), with quality settings, per-body splitting, a three.js preview, and ZIP download for batches. Plain HTML, CSS, and JavaScript with no framework.
Web Application /
3D Converter
Free bulk STEP/IGES to STL converter that runs entirely in the browser. Files are converted locally and never uploaded.
