WAVESPEED AI STL VIEWER Models stay on your device

100% FREE

Free STL Viewer OnlineOpen it, turn it, measure it.

Open STL files right in your browser. Check a part before you slice it.
Turn and zoom, switch on wireframe, check the size, save a screenshot.

STL & 6 more formatsSize & triangle countNothing to install

No sign-up No upload Works on any device

Open a 3D model

Drop a file here, or choose one

GLB, glTF, STL, OBJ, FBX, PLY or 3MF · Up to 300 MBNo model yet? Make one from a photo with AI

Or open a model made with AI

Opened in your browser. Your model is not uploaded.

THREE SIMPLE STEPS

How to use the STL Viewer

Open your STL file

Drop a .stl file, or any other 3D model. It opens in a lit 3D view.

Look around

Drag to turn, scroll to zoom, right-drag to pan. Switch on wireframe, the grid or a slow spin.

Check and share

See the size, triangles, materials and textures, and save a screenshot as PNG.

3D Model Viewer GLB viewer OBJ viewer glTF viewer All free tools

MORE WAYS TO CREATE

Make a model to look at.

Turn a photo or a sketch into a textured 3D model with WaveSpeed AI, then open it here.

IMAGE → 3D

3D Generator

Make a textured 3D model from a photo or a prompt, with Tripo, Meshy, Hunyuan3D, Rodin and more.

Create a 3D model

IDEA → IMAGE

Image Generator

Design your object as a picture first.

Create an image

IMAGE → MOTION

Video Generator

Show your model off in a short video.

Create a video

Generators have separate account and credit requirements. The converter is free.

STL Viewer FAQ

Is this STL viewer free?

Yes. Open as many STL files as you like, with no account or install.

Why is my STL grey?

STL stores only the shape: no colours, textures or units. Most STL files for 3D printing are in millimetres.

Which other formats does it open?

GLB, glTF, STL, OBJ, FBX, PLY and 3MF, up to 300 MB, including Draco and Meshopt compressed glTF.

Can I convert the model for 3D printing?

Yes. Open the free GLB to STL converter from the viewer to size the model in millimetres, close holes and download STL or 3MF.

Is my STL file uploaded?

No. The model is opened in your browser and never leaves your device.