Free Online SolidWorks Viewer (No Signup)
Also opens DWG, DXF, STEP, IGES, IFC, SKP, STL, OBJ, GLB, FBX, 3DM and other 3D/CAD files — drop any file on the viewer.
Works in Chrome, Firefox, Safari, and Edge — no plugin required
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What Is a SolidWorks File?
SolidWorks splits its work across three file types: a .sldprt holds one part, a .sldasm assembles parts, and a .slddrw is the drawing made from them, which is what a machine shop actually works to. The drawing is sheets: views of the model placed at a scale, dimensions, tolerances, notes, and a title block naming the part, the material and the revision.
All three store their parametric model as a serialized object graph in SolidWorks’ own format, which no third-party tool decodes in full. What every document also carries is what SolidWorks saved alongside it. A part or assembly embeds its display tessellation: the exact mesh SolidWorks itself draws on screen, one set of triangle strips per model face, in meters, with per-vertex normals. This viewer decodes that mesh and renders it as real, orbitable 3D geometry; an assembly’s mesh arrives already placed in assembly space, so the whole product appears assembled.
A drawing embeds a full-resolution image of the sheet that was open at the last save, plus a 640×480 image of every other sheet, and that saved image is what opens here: the whole document, legible down to the dimension text, behind a sheet picker. It is a picture, not linework, so it does not stay sharp past its saved resolution; for vector fidelity, export the drawing from SolidWorks as DXF or DWG and open that here instead.
Who Uses SolidWorks Files?
Mechanical engineers and drafters, who issue .slddrw sheets as the manufacturing record of every part; the machine shops, sheet-metal houses and inspectors who receive them; purchasing and quality staff checking a revision before it goes out; and anyone who has been sent a .slddrw by a customer or a contractor and needs to read it on a machine that has no SolidWorks seat.
Common Use Cases
- Read a drawing a customer sent without a SolidWorks license
- Check which revision and material a sheet calls out before quoting
- Flip through the sheets of a multi-sheet drawing on any machine
- See what an old archived .slddrw contains before reinstalling CAD
- Orbit a part or a whole assembly in 3D, in meters, on any machine
- Open a drawing on a phone or tablet in the shop
Features
The Sheet, Readable
Opens the full-resolution sheet image SolidWorks saved in the drawing: every view, dimension, note and title-block field, without a SolidWorks seat.
Every Sheet of the Drawing
Multi-sheet drawings get a picker listing each sheet by name, opening on the sheet the file was saved on.
Both Format Generations
Reads the compound file SolidWorks wrote through 2014 and the record container 2015 and later write, tested from SolidWorks 2012 to 2026.
Honest About Resolution
The status line says whether you are looking at the saved full-resolution image or an inactive sheet’s thumbnail, so softness reads as the file’s limit, not the viewer’s.
Parts and Assemblies in 3D
A .sldprt or .sldasm renders as the display mesh SolidWorks saved in it: real, orbitable geometry in meters, with an assembly arriving already assembled.
Renamed Files Still Open
SolidWorks documents are recognized by their bytes, so a drawing with the wrong extension, or none, still routes to the right reader.
Compiled Reader
The document reader runs as WebAssembly in your browser, opening a hundred-megabyte drawing in well under a second.
Nothing Is Uploaded
Files are read and drawn entirely in your browser. No account, no upload, no copy of your drawing on a server.
Share and Embed
Send a link that opens the drawing in any browser, or drop the viewer into your own page with one iframe.
Compatibility & Format Notes
Both generations of the SolidWorks file format are read: the compound file that releases through 2014 wrote and the record container that 2015 and later write, tested against six hundred documents from SolidWorks 2012 through 2026. Parts and assemblies render as the display mesh embedded in the file, decoded face by face from SolidWorks’ own triangle strips, with smooth per-vertex normals; an assembly renders assembled. Drawings open as the sheet image saved in the file, with every sheet of a multi-sheet drawing on its own picker entry. What has no embedded geometry gets a plain answer instead of a blank scene: an assembly whose components live in external part files that were not uploaded with it, a document from the era that stored streams by reference, or a drawing saved with preview images turned off. The exact parametric B-rep stays SolidWorks-only; for measurable solids, export STEP.
Embed on Your Website
Add this viewer to your own site with a single line of HTML. Click Embed in the toolbar to generate an embed code, or use the snippet below with your own file URL.
Your Files Stay on Your Computer
Your SolidWorks files are parsed entirely in your browser. Nothing is uploaded, stored, or shared unless you explicitly click the Share button. Shared files are hosted for 90 days then deleted.
Frequently Asked Questions
▶Can I open a SLDDRW file without SolidWorks?
Yes. Drop the .slddrw here and the viewer opens the sheet image SolidWorks saved inside the file, which for a drawing is the whole document: every view, dimension and title-block field. Nothing installs and the file never leaves your browser.
▶Why does the drawing go soft when I zoom far in?
Because what the file gives up without SolidWorks is a saved picture of the sheet, not vector linework. It is sharp at the resolution SolidWorks saved it at, typically the full graphics window, and pixelates past that. For vector output, export the drawing from SolidWorks as DXF, DWG or PDF.
▶Can this viewer show a .sldprt part or .sldasm assembly in 3D?
Yes. Nearly every part and assembly embeds the mesh SolidWorks itself draws on screen, and this viewer decodes it into real 3D geometry you can orbit, section and share, at the tessellation quality SolidWorks saved. What it is not is the exact parametric solid: for precise measurement or downstream CAD work, export STEP from SolidWorks and open that here. An assembly whose components live in external part files carries no geometry of its own, and the viewer says so.
▶My drawing has several sheets. Do I get all of them?
Yes, a sheet picker lists every sheet by name. One detail is inherent to the format: SolidWorks saves a full-resolution image only of the sheet that was open when the file was saved, and the other sheets as 640×480 thumbnails, so inactive sheets read softer. The viewer labels which one you are looking at.
▶Which SolidWorks versions does this open?
Both container generations: the OLE compound file written through SolidWorks 2014 and the record container written by 2015 and later. The reader is exercised against a corpus of six hundred real documents spanning SolidWorks 2012 to 2026, including the current release.
▶Why does my .slddrw open as export advice instead of a sheet?
The drawing was saved with preview images turned off (Tools > Options > System Options > General > “Save document preview images”), so the file carries no picture to show. Re-save it with the option on, or export DXF, DWG or PDF from SolidWorks.
▶Is this SolidWorks Drawing viewer really free?
Yes, completely free. No signup, no watermarks, no file size limits on the viewer (the optional share-link feature has a 100 MB upload cap). Built by Innerscene as a tool for architects, engineers, and designers.
▶Are my files uploaded to a server?
No. All parsing, rendering, and conversion runs in your browser — nothing is uploaded, stored, or transmitted by default. The Share button is the only feature that uploads a file, and only when you explicitly click it.
▶Can I convert to another format?
Yes. Click Export in the toolbar to save as STL (3D printing), OBJ (Wavefront), GLB (glTF binary), or PDF (snapshot of the current view).
▶Can I embed this viewer on my own site?
Yes. Click Embed in the toolbar to generate a one-line <iframe> snippet you can paste into any HTML page. You can choose whether the embed shows the viewer’s toolbar.
The sample drawings are from the University of North Dakota Advanced Rocketry Club's competition rocket, MIT licensed and redistributed unmodified. SolidWorks is a registered trademark of Dassault Systèmes SolidWorks Corporation; Innerscene is not affiliated with Dassault Systèmes.