Free browser viewer

Free DWG & DXF viewer

Open a drawing in your browser — no AutoCAD, no install, no account. DXF renders instantly, and your file never leaves your machine because there is no upload.

Parses in a Web Worker on your device. Works on desktop, tablet & phone.

app.caddillo.com
An office floor plan open in the CADdillo browser viewer — layers, dimensions and MEP piping visible.

3 steps

Open your drawing in about a minute

  1. 1

    Open the viewer

    Launch app.caddillo.com in any modern browser — Chrome, Safari, Edge or Firefox — on desktop, tablet or phone. Nothing to install, no account to create.

  2. 2

    Drop your DXF in

    Drag a .dxf onto the canvas (or use the file picker). It renders instantly — pan, zoom, fit-to-extents, toggle layers, and read live cursor coordinates. Have a .dwg? Convert it to DXF first, then drop the DXF in.

  3. 3

    Read, mark up, or edit

    Inspect layers and dimensions, add markup with real draw tools, then export a clean DXF — or open the full editor and change the drawing.

Privacy by design

Your file never leaves your computer

The viewer parses and renders your drawing in your browser, in a Web Worker. There is no upload endpoint — the file is read on your own device and stays there. Cloud CAD viewers send your drawing to a server to render it; CADdillo doesn't.

Under the hood

What the viewer renders

A real CAD entity set, not a thumbnail — built on three.js with a per-layer buffer pipeline tuned for drawings with over 100,000 entities.

Honest limits: text renders as a readable sans-serif label (not a typographic match), HATCH is outline-only, and lineweights/dash patterns draw as thin solid lines. Colors and layers are honored.

Answers

DWG & DXF viewing, answered

Can I view a DWG or DXF file without AutoCAD?

Yes. The CADdillo viewer runs in your browser with no AutoCAD, no install and no account. DXF files render instantly. DWG files need one conversion step to DXF first — use the free DWG to DXF converter, then drop the DXF into the viewer.

Does my drawing get uploaded to a server?

No. The viewer parses and renders your DXF entirely in your browser, in a Web Worker — there is no upload endpoint, so the file never leaves your machine. Confidential vendor drawings and NDA plans stay on your own device, unlike cloud viewers that render server-side.

What can the viewer render?

Lines, polylines (with bulge arcs), circles, arcs, ellipses, splines, text and MTEXT, nested block INSERTs resolved recursively, SOLID/3DFACE outlines, DIMENSION geometry and HATCH boundaries — with per-layer visibility and ACI colors. Text is drawn as a readable label rather than a typographic match, and lineweights/dash patterns render as thin solid lines.

How do I view a DWG file specifically?

Convert the DWG to DXF first with the free converter, then open the DXF in the viewer. Native in-browser DWG reading is on the roadmap; for now the one-step DXF conversion keeps the whole flow free and fast.

Does it work on my phone?

Yes. The viewer works in mobile Safari and Chrome with one-finger pan and two-finger pinch-zoom. Same privacy on phone and tablet as on desktop — the file is parsed on your device.

Is it really free?

The viewer and all 217 professional blocks are free forever. Pro ($20/mo) adds unlimited saved drawings, DWG import/export and monthly AI credits — versus about $60/mo for AutoCAD LT.

Drop your DXF in and read it right now.