ExcelsisView 1.1.23 is an open-source Windows viewer for DXF, DWG, regular PDF, and supported PRC/U3D 3D PDF documents. Document processing is local, and native document parsers run behind Windows process-containment and resource limits.
- Windows installer
- Release notes and all assets
- Exact corresponding-source archive
- SHA-256 checksums
- Licensing and security audit
Version 1.1.23 opens the active DXF/DWG model or paper space instead of drawing both spaces together. Large read-only DWGs use cached batched canvas paths, indexed pointer hit-testing, bounded feature-list output, and defer editable contour analysis until Save As DXF. The full PDF, PRC, U3D, DWG/DXF, containment, Explorer, source, security, and packaged-byte gates were rerun against the exact release candidate.
The installer and ExcelsisView binaries are currently unsigned, so Windows may show a SmartScreen warning. Microsoft Defender was disabled in the build environment, so no Defender scan is claimed. Kaspersky 21.26 with 2026-08-11 bases scanned the exact release assets and unpacked payload with zero detections or suspicions. Verify the installer SHA-256 before running it.
The exact expanded source is committed under source/. It
contains the application source, the pinned modified nanoPRC source, the
pinned modified U3D source, the LibreDWG source archive, license texts, and
the scripts used to rebuild the release.
From source/ExcelsisView-1.1.23/app-asar-extract on Windows with Node.js 24,
npm, PowerShell, the documented native prerequisites, and Zig 0.16.0:
npm ci
npm run distSee
source/ExcelsisView-1.1.23/app-asar-extract/SOURCE.md
for the complete build requirements.
- Project site: https://simonsystem609.github.io/ExcelsisViewer/
- Excelsis Helper: https://simonsystem609.github.io/ExcelsisHelper/
- Support and issue reports: https://github.com/simonsystem609/ExcelsisViewer/issues
- Excelsis3D plans and development help: https://discord.gg/uJrSBQm68
- Support development: https://buymeacoffee.com/lakatos
Please do not upload confidential customer or CAD files to public issues.
For collaboration, development, or general inquiries, email simonsystem609@gmail.com.
For bug reports, please use GitHub Issues; it is the preferred channel for reproducible problems. Do not email credentials or confidential files.
Authored ExcelsisView code is AGPL-3.0-or-later; see LICENSE.
Bundled third-party components retain their own compatible licenses and
notices.