View 3D STL Files Online - Free STL Viewer & Analyzer
View and analyze STL (STereoLithography) files for 3D printing and modeling. Supports both binary and ASCII STL formats.
Our free STL Viewer lets you view and analyze STL (STereoLithography) files used in 3D printing and 3D modeling directly in your browser.
STL files are the standard format for 3D printing. View model statistics including triangles, vertices, edges, and file format detection.
Works with both binary and ASCII STL formats. All processing happens locally - your 3D models never leave your computer.
Why use this tool
- Parse binary and ASCII STL files automatically
- View 3D model statistics: triangles, vertices, edges
- Detect file format (binary or ASCII) automatically
- Analyze file size and model complexity
- Client-side processing - files never uploaded
- Works with STL files from any 3D software
- No software installation required
- Completely free with no limits
How it works
- Upload your STL file (binary or ASCII format)
- View automatic format detection
- See model statistics: triangles, vertices, edges
- Analyze your 3D model information
Frequently asked questions
What is an STL file?
STL (STereoLithography) is a file format native to stereolithography CAD software. It's the most widely used format for 3D printing and describes the surface geometry of 3D objects using triangular facets.
What's the difference between binary and ASCII STL?
Binary STL files are more compact and efficient, while ASCII STL files are human-readable text. Binary STL files are typically much smaller (5-10x) than ASCII versions of the same model.
Can I view STL files without 3D software?
Yes! Our STL Viewer lets you view STL file information and statistics directly in your browser without installing any 3D modeling or slicing software.
Is my STL file uploaded to servers?
No, all processing happens locally in your browser. Your 3D model files are never uploaded to our servers, ensuring complete privacy and security.
What information can I see about my STL file?
You can see the number of triangles, vertices, edges, file format (binary or ASCII), file size, and other model statistics that help you understand your 3D model.
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