DWG viewer for Windows: no install, runs in Edge
This DWG viewer for Windows runs in Edge, Chrome, or Firefox on Windows 11 and 10 with nothing to install, so it works on locked-down work PCs where DWG TrueView cannot be installed. DWG and DXF files are read on your PC and never uploaded. Layers, measure, print, and PDF export are included.
DWG viewer for Windows: browser or DWG TrueView?
On Windows the default free answer is Autodesk DWG TrueView. It is a solid viewer, but it is a download of roughly 1 GB, it needs an Autodesk account to get and administrator rights to install, and it runs on Windows only. On a corporate laptop with software installation blocked, that is a dead end.
| DWG Viewer (this site) | Autodesk DWG TrueView | |
|---|---|---|
| Install | None; runs in Edge | Large installer, admin rights |
| Account | None | Autodesk account |
| Opens | DWG R14–2018+, DXF | DWG, DXF |
| Converts DWG versions | No | Yes, in batch |
| Export | PDF, SVG, PNG | PDF, DWF, plot |
| File stays on PC | Yes | Yes |
Use TrueView when you need to save a drawing down to an older DWG version or plot with the full AutoCAD plot engine. Use the browser when you need to see the drawing now. Both keep the file on the PC, so the choice is about installation rights and features rather than privacy. There is more on this trade-off on the DWG TrueView alternative page.
Windows 11, Windows 10, and older PCs
The requirement is the browser, not the Windows version. Edge is preinstalled on Windows 10 and 11 and supports WebAssembly and WebGL, which is everything the viewer uses. There is no 32-bit or 64-bit choice to make and no 64-bit download, because nothing is installed; the browser caches a 9 MB module the first time you open a DWG.
On a Windows 7 machine it comes down to whether the installed browser is recent enough to run WebAssembly; the last Chrome and Firefox builds released for Windows 7 do. Windows on ARM laptops work because the browser runs natively there. Typical 1–20 MB drawings open in 1–10 seconds on an ordinary office laptop.
Edge's IE mode is the one exception. It runs the old Internet Explorer engine, which has no WebAssembly, so if a company policy forces a site into IE mode, open this page in a normal Edge tab instead.
DWG thumbnails in Explorer and preview in Outlook
Windows does not show DWG thumbnails or an Outlook preview by itself. Those come from a shell extension that AutoCAD and DWG TrueView install, which is why a PC that once had AutoCAD shows thumbnails and a fresh PC does not. This viewer does not integrate with File Explorer; the equivalent is to drag the .dwg from Explorer into the browser tab, which takes about as long as a preview pane.
If Explorer thumbnails matter to you, TrueView is the free way to get them. For the rest of the Windows setup, including file associations, see how to open a DWG file on Windows.
What you can do with the drawing
The renderer is WebGL based, so panning and zooming stay responsive on large plans. You can show and hide layers, fit the drawing to the window, measure the distance between two points, and switch between light and dark themes. The status bar reports the entity count, a quick sanity check that the whole file loaded. Measurements are reported in the drawing's own units; the viewer does not convert them.
Output options are print through the Windows print dialog (including Microsoft Print to PDF), export the current view as PNG, and export the whole drawing as vector SVG or PDF. The viewer does not edit or save DWG; for that, see the free editors on edit DWG online.
Open a DWG on a Windows PC in three steps
- Open this page in Edge, Chrome, or Firefox.
- Drag the .dwg or .dxf from File Explorer onto the drop zone, or click to browse. Network drives and OneDrive folders work as long as the file is synced locally.
- Fit, toggle layers, measure, and print or export.
Supported versions are DWG from AutoCAD R14 through 2018 and newer and DXF of any version; DWG R12 and older open only partially, files over 60 MB are skipped, and DWF is not supported. DWG versions explains how to tell which one you have.
Private even on a work PC
Corporate IT often blocks upload-based converters for good reason: a drawing sent to an unknown server is a data leak. This viewer makes no such request. The file is parsed by JavaScript in the tab, rendered on the GPU, and discarded when the tab closes. You can verify it in Edge's DevTools network panel. That makes it usable on machines where policy forbids both installs and uploads. A managed Edge profile changes nothing: the page needs no extension, no permission prompt, and no sign-in to work.
Frequently asked questions
Is there a Microsoft DWG viewer built into Windows?
No. Windows 10 and 11 have no native DWG reader, and Microsoft 3D Viewer does not open DWG. Use a browser viewer like this one or install DWG TrueView.
Is DWG TrueView free, and do I still need it?
It is free with an Autodesk account. You need it if you want DWG version conversion, Explorer thumbnails, or AutoCAD-style plotting; for viewing, measuring, and PDF export, the browser is enough.
Can I preview DWG files in Windows Explorer?
Only after installing AutoCAD or DWG TrueView, which add the thumbnail handler. This viewer does not add Explorer previews; drag the file into the tab instead.
Does this DWG viewer work on Windows 7?
It works if the browser on that PC supports WebAssembly and WebGL. The final Chrome and Firefox releases for Windows 7 do; the old Internet Explorer does not.
Is there an open source DWG viewer for Windows?
LibreCAD and QCAD Community are open source and read DXF; DWG support is partial or add-on. This viewer's DWG reading is built on the open source LibreDWG library. See best free DWG viewers.
Do I need a 64-bit download?
No download at all. The viewer runs inside your 64-bit (or ARM) browser, so there is no separate build to choose.