IfcOpenShell viewer

• GET / HTML front-page with upload
• POST / Form post upload. Redirects to /p/{id}.
• GET /p/{id} HTML progress page
• GET /pp/{id} JSON progress
• GET /log/{id}.{ext} Conversion log. ext: html|json
• GET /v/{id} HTML viewer page
• GET /m/{id}.{ext} Artefact download. ext eg: .svg | .glb | .tree.json