Ghostscript WebAssembly, unmodified @jspawn/ghostscript-wasm 0.0.2, GNU AGPL-3.0.
Copyright Artifex Software, Inc. and contributors. License: LICENSE

Corresponding source and build scripts:
https://github.com/jsscheller/ghostscript-wasm/tree/d45193808b707ebefb3df7560586b3d404d64c39
https://github.com/jsscheller/ghostscript-wasm/archive/d45193808b707ebefb3df7560586b3d404d64c39.tar.gz
GhostPDL submodule:
https://github.com/ArtifexSoftware/ghostpdl/tree/00f6bd069221701d054abc67909e80ff61561d75
https://github.com/ArtifexSoftware/ghostpdl/archive/00f6bd069221701d054abc67909e80ff61561d75.tar.gz
zlib submodule:
https://github.com/madler/zlib/tree/21767c654d31d2dccdde4330529775c6c5fd5389
Build environment: Dockerfile, build.sh and arch_wasm.h in the exact wrapper source above.

The adapter worker source is delivered without minification at:
/assets/js/customer-proof-eps-worker.js
It is licensed under GNU AGPL-3.0. EPS and the resulting PNG are exchanged with the separate frontend through structured messages.
No changes were made to the Ghostscript interpreter or its distributed JavaScript/WASM files.