3D Print STL File Viewer 3D Modeling Software
Open a 3D Print STL File and turn it, zoom it and look from the front, side and top.
Nothing is uploaded. Your file is read in your browser and never leaves your computer.
What this does
Drop a 3D Print STL File and it opens in the same clay studio view our catalogue uses: warm tan clay, soft shadows, an orthographic camera so sizes compare honestly. Drag to turn it, right-drag to pan, scroll to zoom, or jump to the front, side or top. The table beside it measures the model in millimetres and says whether the mesh is closed. Nothing is uploaded.
How it works
- Choose your 3D Print STL FileDrag a 3D Print STL File onto the box above, or press it and pick one. It is read in your browser, so nothing is uploaded.
- Look at itDrag to turn the model, scroll to zoom. The table beside it counts the triangles, measures the model and says whether it is watertight.
- Convert it if you need toEvery converter on this site is one link away at the bottom of this page, and each of them reads the file the same way.
About the formats
- What the viewer measures
- Triangles, size in millimetres, volume, how many separate shells, and whether every edge is shared by exactly two faces.
- What the view buttons change
- Only the camera and the light. The model itself is never moved, scaled or rewritten.
Questions
Is 3D Print STL File Viewer 3D Modeling Software free?
Yes. Every tool on StarForge is free, with no account, no sign-in and no limit on how many files you run through it. It runs on your own computer, so it costs us nothing to give away.
Is my file uploaded anywhere?
No. Nothing is uploaded. Your file is read in your browser and never leaves your computer. There is no upload step, no server copy and nothing kept afterwards, which is also why it works with the network switched off once the page has loaded.
How large a file can I use?
Up to 250 MB. The limit is your browser's memory rather than an upload size, because the file never goes anywhere; a file larger than that is refused with a message rather than crashing the tab.
More tools
- 3D Print STL File Converter 3D Modeling Software
- Vase Mode Checker 3D Modeling Software
- Flexi Maker 3D Modeling Software
- STEP File to 3D Print STL File Converter 3D Modeling Software
- STEP File Viewer 3D Modeling Software
- Hose Adapter Generator 3D Modeling Software
- Gear Generator 3D Modeling Software
- LEGO-Compatible Brick Generator 3D Modeling Software
- All tools
Printability Guaranteed
No Broken Mesh
No Intersecting Mesh
No Defective Anatomy
Choose Your Membership
| Included each month | Starter | Merchant | Merchant+ |
|---|---|---|---|
| Credits | 45 | 150 | 450 |
| STL Unlocks | up to45 | up to150 | up to450 |
| 3D Print Ideas | up to15 | up to50 | up to150 |
| Sell 3D Prints | Included | Included | Included |
| Sign up |























