CaddisCAD REVIEW
Open app

Fast CAD viewing · Web & mobile

Open supported CAD geometry. Review it anywhere.

Caddis opens certified subsets of DWG, DXF, STL, STEP and more locally — no CAD license or mandatory upload. Review layers, measure, mark up, and share on mobile or the web.

Download on the App Store Try the web viewer
  • No account for local viewing
  • Files stay on your device
  • No unfinished cloud features
Building013-0_Floor1.dwgLocal session 1u = 0.1 ft
24' 6"1
MeasureLayersMarkupSelectShareAnnotationsMore

Everything review needs

A full review workflow, minus the CAD seat.

Layers, measurement, and markup — the parts of CAD review you actually use, ready the moment a file opens.

Layers

See only what matters.

Search, isolate, hide, and show layers so a dense drawing stays readable. Every layer keeps its real color and state.

Measure

Measure straight off the drawing.

Distance, area, perimeter, and angle — snapped to geometry and captured to your drawing's scale.

Markup

Comment without touching the source.

Notes, arrows, rectangles, and revision clouds live on their own layer, so review stays clear and portable.

Caddis Cloud

Help shape what comes next.

Caddis starts local-first. Help us prioritize optional sync, secure storage, review links, and team workflows.

The viewer

A drawing you can actually work with.

Pan and pinch like paper. Snap to geometry. Lock the view before you hand it off. It behaves like the drawing itself, not like a file you happen to be looking at.

  • Local open. Supported geometry renders without a round trip to a server.
  • One experience. Identical tools on mobile and web.
  • Source-safe. Measurements and markup never alter the original file.
Open the sample drawing

How it works

From file to feedback in three steps.

01

Open

Tap a file on your phone or drop it in the browser. No account, no conversion, no wait.

02

Review

Toggle layers, measure to scale, and mark up directly on the drawing.

03

Share

Export a view or annotation file directly from your device.

Local-first by default

Your drawings don't leave your device unless you say so.

Caddis opens and reviews files entirely on-device. Cloud sync, source uploads, and share links are opt-in, per project — a local session is never quietly turned into a cloud project.

Format compatibility

Truthful support, with limits called out.

STL and supported ASCII DXF/mesh geometry open locally. DWG, STEP/STP, IFC, and SolidWorks compatibility is limited to documented source subsets; unsupported geometry is rejected instead of replaced with a generated preview.

DWGAutoCAD drawingsLive in browser
DXFDrawing exchangeLive in browser
STLMesh modelsLive in browser
STEPSolid geometryLive in browser
OBJ3D geometryLive in browser
PLYMeshes / point cloudsLive in browser
IFCIFC2x3 / IFC4 geometryLive in browser
SLDPRTSolidWorks partsLive in browser
SLDASMSolidWorks assembliesLive in browser

Every format below opens live in your browser.

2D drawings

DWGAutoCAD drawings
DXFDrawing exchange

Meshes

STLMesh models
OBJ3D geometry
PLYMeshes / point clouds

Solid & BIM

STEPSolid geometry
IFCIFC2x3 / IFC4 geometry
SLDPRTSolidWorks parts
SLDASMSolidWorks assemblies

Start reviewing in seconds.

Bring your next drawing into Caddis and see it render on the spot.

Download on the App Store Try the web viewer