Free Online STL Viewer

STL Viewer

View 3D STL models online in your browser — no software required

FreeNo Sign-upBrowser-BasedInstant Preview

Example:

Why Choose Our Online STL Viewer?

Instant Online Viewing

Open 3D models online directly in your browser with no plugins or downloads. Just drag, drop, and start viewing in seconds.

Drag and Drop Upload

Simply drag your 3D model onto the page to start viewing instantly. No complicated menus or multi-step processes needed.

Rotate, Pan and Zoom

Full 3D interaction with intuitive mouse and touch controls. Inspect your model from every angle with smooth online rendering.

Measurement Tools

Check dimensions and inspect model geometry before printing. Measure distances, angles, and verify your design specifications.

Multi-Format Support

View OBJ, 3MF, and other popular 3D formats online. One viewer for all your models.

100% Private

Models are processed locally in your browser. Nothing is uploaded to a server. Your designs stay completely private and secure.

How to Use Our Online STL Viewer

Upload Your 3D Model

Drag and drop or browse to select your 3D model. Our online viewer also supports OBJ, 3MF, and more.

Interact with Your Model

Rotate, zoom, and pan to inspect every detail. Use measurement tools to check dimensions online.

Export or Share

Take screenshots or generate an embed link for your website. Share your 3D models with anyone online.

Supported 3D Formats

STL.stl

Stereolithography format, the standard for 3D printing

OBJ.obj

Wavefront 3D object format with material support

3MF.3mf

3D Manufacturing Format with color and texture data

GLTF/GLB.gltf .glb

GL Transmission Format for efficient web 3D delivery

FBX.fbx

Autodesk exchange format with animation support

PLY.ply

Polygon format commonly used for 3D scanned data

DAE.dae

Collada interchange format for 3D applications

STEP.step .stp

ISO standard for CAD data exchange

IGES.iges .igs

Initial Graphics Exchange Specification for CAD

Frequently Asked Questions

An STL (Stereolithography) model uses a triangle mesh to describe the surface geometry of a three-dimensional object. It is the standard format for 3D printing and is supported by virtually all slicing software and online printing services.

Simply drag and drop your model onto our online STL viewer, or click the upload button to browse your device. Your 3D model will render instantly in the browser with full rotation, pan, and zoom controls. No software installation or sign-up is required.

Yes, our online viewer is completely free with no limitations. There are no size restrictions, no watermarks, and no account required. You can view as many 3D models as you need at no cost.

Absolutely. All processing happens locally in your browser using JavaScript and WebGL. Your 3D models are never uploaded to any server. They remain entirely on your device, ensuring complete privacy and security.

Our online viewer supports STL, OBJ, 3MF, GLTF/GLB, FBX, PLY, DAE (Collada), STEP, and IGES formats. The primary format offers full measurement tools and 3D print preparation features.

Yes. Our online viewer is fully responsive and works on smartphones and tablets. Touch gestures are supported: use one finger to rotate, two fingers to pan, and pinch to zoom in and out.

No. Our viewer runs entirely in your web browser using WebGL technology. There is nothing to download, install, or update. It works on Chrome, Firefox, Safari, Edge, and other modern browsers.

Yes. You can capture a screenshot of your 3D model at any angle using the built-in screenshot tool. The image is saved directly to your device and can be shared or used in documents and presentations.