STL Viewer How to Use File Information File Features FAQ Other STL Tools Latest News

View 3D STL Files Online

Use this free tool to view your 3D STL (Standard Triangle Language) files online without needing to install any software. Our STL viewer tool will generate a real-time 3D preview of your STL file with Pan and Zoom controls, allowing you to see your 3D model from any angle.

Our STL viewing tool can load most STL files, and we are working on improvements all the time to improve compatibility with all file formats. If you are looking to convert your 2D image files to 3D files, such as STL, then we have a 2D to 3D conversion tool here.

How to View your STL File Online?

Here are two simple steps to display your STL file in any web browser.

Upload an STL

Click the "Upload a File" button and select an STL to upload. The maximum file size is 100MB.

View your STL

Once processed, your STL file will be displayed in the web browser.

File Format Information for STL

Extension	STL
Full Name	Standard Triangle Language
Type	3D Model
Mime Type	application/vnd.ms-pki.stl
Format	Text & Binary
Tools	STL Converters, 3D Model Voxelizer, Create STL Animation, Compress STL, Text to STL, STL Viewer
Open With	Blender, Daz Studio, MeshLab, CAD Assistant

Description

The STL file format has its roots in the 1980's and is the native file format for 3D Systems stereolithography CAD software. The format defines a triangulated mesh with vertices and faces and is a popular format for sharing 3D printable model files.

There were several formats that attempted to extend the STL format, namely SolidView and VisCAM, whose formats included limited 15-bit color information for each mesh face, which is often ignored by most modern 3D software. The STL format can be either text or binary; our tools will support both formats.

STL Features

Mesh Geometry (Vertices and Faces)
Vertex Normals
Face Normals
Vertex Colors
Face Materials (Excluding textures)
Textures
Point Cloud
Multiple Objects Per File
Object Transforms (Translation, Rotation, and Scale)
Bones/Joints
Animations
Suitable for 3D Printing

Frequently Asked Questions

What STL formats can I convert from?

You can convert from both text and binary STL files. If your STL file contains color information we will bring this over.

How long does it take to view my STL file?

We aim to process all STL file viewing requests as quickly as possible, this usually takes around 5 seconds but can be more for larger or more complex files so please be patient.

How accurate is the STL file viewer?

We aim to create the most accurate rendition of your STL file with our tools. Our tools are under constant development with new features and improvements being added every week.