Help / FAQ
viewer.run help
Learn how to open CAD drawings in your browser, manage server files and operate a workspace with permissions and audit history.
Workflow
Main workflows
Open a local DXF
Choose a DXF with the file button or drag and drop. Select several files to switch between drawings.
Open a remote URL
Enter a URL and press Enter. Semicolon-separated URL lists are also supported.
Manage server files
Signed-in users can upload, search, bookmark, inspect, download, delete and restore files.
Review a drawing
Use layer visibility, search, grouping, the minimap, zoom, fit and rotation to inspect the relevant area.
Measure
Enable measurement mode and select points on the drawing to review distances and areas.
Export
Save the current view as PNG, download the original DXF or use browser printing to create a PDF.
Permissions and security
- Public local viewing does not require sign-in.
- Server file lists, downloads and permissions require sign-in and file access.
- Administrators can inspect users, files, failures and audit history.
- Sensitive APIs use rate limits, upload validation and security headers.
Troubleshooting
- If a drawing is blank, use Fit to screen and retry with UTF-8 or CP949 encoding.
- Remote URLs must be reachable by the server and allow downloads.
- Server uploads must pass extension, size and DXF signature validation.
- If a file is missing after sign-in, request access from its owner or an administrator.