CAD file guide
DWG vs DXF: two CAD formats, different jobs.
DWG is commonly used as a native CAD drawing format, while DXF is designed to make drawing data easier to exchange between different CAD systems. Both can hold useful geometry and drawing information for review.
No account required for local viewing. Files stay on your device unless you opt into Cloud.When should you use DWG or DXF?
Use DWG when working within a CAD workflow that preserves the native drawing. Use DXF when exchanging drawing data with another tool or collaborator. For review, Caddis can open either format locally.
How to get started
- Open Caddis in your browser.
- Choose the DWG or DXF file from your device.
- Use layers, measurement, and markup to review it.
Built for practical review
- Open both DWG and DXF locally
- No mandatory upload for local review
- Consistent review tools across formats
- Optional cloud sharing
Your drawings stay under your control
Caddis is local-first: opening a supported file for local review does not require uploading it. If you choose Caddis Cloud, you can continue a project across devices or create a revocable, read-only link.
Frequently asked questions
Do I need an account to use Caddis?
No. You can open and review supported files locally without creating an account. An account is only needed for optional cloud features.
Are my CAD files uploaded?
Not for local viewing. Caddis processes supported files on your device. Cloud storage and share links are opt-in per project.
Can I use Caddis offline?
Local review is designed to work on your device. Cloud sync and share links naturally require an internet connection.
Explore Caddis tools
DWG viewerDXF viewerSTEP viewerSTL viewerOpen DWG without AutoCAD