Caddis CAD REVIEW

DWG viewer for contractors

Review DWG plans without carrying a CAD workstation.

Caddis is built for the practical part of drawing review: opening a supported plan, checking the information you need, and sharing clear feedback. It is a review utility, not a replacement for the authoritative design file or engineering sign-off.

Open the free viewerDownload on the App Store
No account required for local viewing. Files stay on your device unless you opt into Cloud.

What should a contractor look for in a DWG viewer?

For field review, the useful basics are fast access to the drawing, readable layers, measurement tools, and markup that does not alter the source. Caddis keeps local review on-device and separates review annotations from the original file.

Caddis on iPhone measuring a 7.7-foot stair run in a DWG floor planMeasure a stair run on site

Field-review workflow

From drawing to clear feedback.

  1. 01Open Caddis on the web or iPhone.
  2. 02Choose a supported DWG from Files or your device.
  3. 03Use layers, measurement, and markup to prepare feedback, then verify critical information against the source drawing.

Built for practical review

Review plans without a desktop CAD licenseInspect layers and measure supported geometryKeep the source drawing unchangedCreate clear, source-safe review feedback

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.

Which CAD formats can Caddis open?

Caddis opens supported geometry from DWG, ASCII DXF, STL, OBJ, PLY, STEP/STP, and IFC files. DWG, STEP/STP, and IFC compatibility is limited by source version and geometry type; unsupported geometry is reported rather than silently replaced.

Explore Caddis tools

DWG viewerDXF viewerSTEP viewerSTL viewerOpen DWG without AutoCADDWG viewer for contractorsCAD markup in the field