Free · open source · nothing uploaded

Open DWG files in your browser.

A free DWG and DXF viewer that runs entirely on your device. No account, no installation, no upload, and it works on a Mac as well as it does on Windows or a phone.

Open DWG or DXF● Offline · nothing uploaded

Drop a drawing here

The file is read by your browser. It is never uploaded.

Your file stays with you

The drawing is decoded inside this tab by WebAssembly. No upload, no server copy, no cookies.

Any computer, any phone

Mac, Linux, Windows, iPhone, Android. If the browser is current, it opens.

Open source, for good

GPL-3.0 on GitHub. Anyone can check what it does, host their own copy, or improve it.

Why a free DWG viewer?

DWG is how buildings, machines and installations get shared. It is a proprietary, undocumented format, and the official free ways to open it are a Windows-only program or an online viewer that needs an account and an upload. We think looking at a drawing should be as easy as opening a PDF. Read why we built it.

How to open a DWG file

Click Open DWG or DXF above, or drop the file anywhere on this page.
Drag to pan, scroll to zoom. On a trackpad, two fingers pan and pinch zooms. Check a detail by turning layers on and off.
Need a dimension? Measure snaps to line ends, midpoints and crossings, and gives the length, the angle and the area. More on measuring.
Need it on paper? PDF plots the whole drawing or a window you pick, on a sheet from A4 to A0, fitted or at a fixed scale. More on DWG to PDF.
That is it. Close the tab and nothing remains.

More options, including desktop programs, are in the guide how to open DWG without AutoCAD. On a Mac? See DWG viewer for Mac. Opening a DXF? See the DXF viewer. All guides are in DWG guides.

Questions

Is the file uploaded anywhere?: No. The drawing is read by a WebAssembly build of LibreDWG running in your browser tab. Nothing is sent to a server, and the page keeps working with the network switched off after it has loaded.
Do I need an account or AutoCAD?: No account, no installation, no trial. Open the page, choose a file.
Does it work on a Mac, Linux or a phone?: Yes. Any current browser with WebGL does the job: Safari, Chrome, Firefox or Edge, on desktop or mobile.
Can I measure distances on the drawing?: Yes. Press Measure and click two points. The reading snaps to line ends, midpoints and crossings, so it lands on the geometry instead of near it, and keeps a running total and the area of a closed outline. One drawing unit is read from the file header; when the header is wrong, you can set the unit yourself.
Can I save the drawing as PDF?: Yes. Press PDF, pick the whole drawing or a window, a sheet size and a scale, and download it. The PDF is vector, so lines and text stay sharp at any zoom and print properly. Editing and DXF export are not there yet.
Why is it free?: Because looking at a drawing someone sent you should not depend on having a Windows PC, an account or a server you have to trust with the file. The code is GPL-licensed and public, so it stays free.