3D File Forge uses occt-import-js 0.0.23 (LGPL-2.1), containing Open CASCADE Technology (LGPL-2.1 with OCCT exception). Copyright remains with the respective upstream authors. No warranty is provided.

Library source and build files:
https://github.com/kovacsv/occt-import-js/tree/c2148e54b456b571238d35cac037d304053d64b2
Underlying OCCT source:
https://github.com/Open-Cascade-SAS/OCCT/tree/d2abb6d844231cb8f29be6894440874a4700e4a5

The separately loaded library can be replaced by a compatible modified build. Debugging modifications to this LGPL library is permitted. The application does not statically link proprietary application code into OCCT.

Changes dated 2026-10-06: ESM default export appended to the JS loader; linear-memory maximum reduced from 2 GiB to 256 MiB in the loader and WASM memory section. Geometry algorithms unchanged. The complete modification script is provided alongside these assets as prepare-cad.mjs.txt, under LGPL-2.1. The build copies the original license texts next to this notice.

Complete corresponding-source distribution: /vendor/occt-0.0.23/corresponding-source.zip
Source/build/modification/replacement instructions: /notices/CAD_SOURCE.txt
The package includes the full pinned importer and OCCT source archives, upstream licenses and OCCT exception, build scripts and our adaptation script. Generate and verify it with npm run build:release before distributing the binary. The runtime remains separately replaceable. The pinned npm-binary adaptation has been reproduced; a full compiler rebuild has not been verified byte-for-byte here.