Free browser-based 3D inspection
Private online STL viewer
Open and inspect 3D-printing models without installing software. The viewer supports ASCII and binary STL files and processes them locally, so models opened in the browser stay on your device.
Inspect STL models in your browser
Rotate, pan, and zoom the model; switch between perspective and orthographic cameras; select front, back, left, right, top, or bottom views; and inspect the model in solid or wireframe mode.
Model measurements and details
STL Viewer reports the file size, triangle count, and X, Y, and Z dimensions after local validation. STL coordinates do not declare a unit, so interpret dimensions using the unit used when the model was exported.
Local and privacy-friendly
The interactive viewer does not upload the selected STL or its metadata. Developers who intentionally need automated PNG output can use the separate, temporary STL rendering API. Read the full privacy notice.