Open SLDPRT files online
SLDPRT, SLDASM and SLDDRW are SolidWorks’ native part, assembly and drawing files. Each one embeds a preview image, which the viewer extracts and shows — a quick look without SolidWorks installed. (The full editable 3D model still requires SolidWorks.)
Drop a SLDPRT file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
Or turn SLDPRT into an image — snapshot the preview, add arrows or notes, and download a PNG.
What is a SLDPRT file?
SLDPRT, SLDASM and SLDDRW are SolidWorks’ native part, assembly and drawing files. Each one embeds a preview image, which the viewer extracts and shows — a quick look without SolidWorks installed. (The full editable 3D model still requires SolidWorks.) The .SLDPRT extension identifies a SolidWorks document file, which is served with the application/octet-stream media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open SolidWorks (SLDPRT/SLDASM) files in desktop apps such as SolidWorks, eDrawings Viewer — but here all you need is a web browser.
Quick facts
| Format | SolidWorks (SLDPRT/SLDASM) — SolidWorks document |
|---|---|
| File extensions | .sldprt .sldasm .slddrw |
| MIME type | application/octet-stream |
| Developer | Dassault Systèmes |
| Category | 3D, CAD & GIS |
| Also opens in | SolidWorks, eDrawings Viewer |
How to open a SLDPRT file online
- Click Choose file above, or drag your SLDPRT file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render SLDPRT in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .SLDPRT file?
A .SLDPRT file is a SolidWorks document, identified by the application/octet-stream media type. You can open and read it instantly in the viewer above without installing anything.
What programs open SLDPRT files?
On the desktop, SLDPRT files typically open in SolidWorks, eDrawings Viewer. Online, this page opens them in any modern browser — nothing to download.
How do I convert SLDPRT to an image?
Use Snapshot to capture the SLDPRT preview, optionally add arrows, text or highlights, then download it as a PNG image.
Is it safe to open my SLDPRT file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a SLDPRT file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.