Caddis CAD REVIEW

Field CAD markup

Turn a site observation into clear drawing feedback.

A good field-markup workflow should be quick enough to use in the moment and careful enough not to overwrite the source. Caddis pairs local drawing review with separate annotations so comments, arrows, and measurements stay part of the review process—not an accidental edit to the issued file.

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

How should CAD drawings be marked up in the field?

Start by confirming you have the current drawing, isolate the relevant layers, and capture the observation as a specific annotation. Include enough context for someone off-site to understand the location and issue. Treat measurements as review aids and verify anything critical against the authoritative drawing and field conditions.

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 the current supported drawing in Caddis.
  2. 02Use layers and navigation to locate the area under review.
  3. 03Add separate markup and measurements, then share the review through your approved project workflow.

Built for practical review

Separate review markup from the source fileLayer controls and measurement toolsLocal-first access for practical reviewOptional cloud projects and revocable share links

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