CAD files are some of the largest and most complex files that professionals need to share. A single DWG drawing can be 50MB. A full building model with all details can exceed 500MB. An assembly with embedded textures and materials can hit 1GB. Email cannot handle this and most cloud storage services require accounts on both ends.
Why CAD Files Are Difficult to Share
- File size - detailed 3D models and multi-sheet drawings are routinely 50MB to 1GB
- Multiple file types - a single project may include DWG, STL, OBJ, STEP, IGES, PDF drawings and specification documents
- Companion files - many CAD formats depend on external references: textures, materials, fonts, xrefs
- Version sensitivity - the wrong version of a file can cause expensive manufacturing errors
- IP protection - engineering designs are valuable intellectual property that needs encryption during transfer
How to Share CAD Files with EasySend
- Bundle all project files - upload the DWG/STL/OBJ file along with all companion files (textures, xrefs, specifications). Everything bundles under one link.
- Add a description with the revision number and date ("Bridge Design Rev 4 - 2026-03-29"). This prevents version confusion.
- Enable encryption for proprietary designs. Your files are encrypted in the browser before upload.
- Share the link with your client, contractor or manufacturer.
- Track downloads to confirm the recipient received the correct files.
Compression Tips for CAD Files
- Purge unused elements before export - remove unused layers, blocks and styles to reduce file size
- Use lightweight formats where possible - STL for 3D printing, STEP for manufacturing, PDF for review-only
- ZIP before uploading if you have many small companion files - this preserves folder structure and reduces upload time
- Export at appropriate resolution - high-poly meshes can often be reduced without affecting manufacturing tolerance
Supported CAD File Formats
EasySend accepts all CAD formats with no restrictions:
- DWG (AutoCAD), DXF
- STL (3D printing)
- OBJ (3D models with materials)
- STEP, IGES (manufacturing exchange)
- 3MF (modern 3D printing)
- Revit (RVT), SketchUp (SKP), Rhino (3DM)
- SolidWorks (SLDPRT), CATIA, Fusion 360
For Architecture and Engineering Firms
If your firm shares CAD files regularly, the EasySend API can automate the process. Export a drawing from your CAD software, upload via the API and distribute the share link automatically. See the architect guide and engineering industry page for workflow examples.
Share CAD Files