STL Viewer
View and analyze 3D STL files for 3D printing and modeling
Drop STL file here or click to upload
3D model files for printing and fabrication
How to View STL Files Online
- Upload your STL file (binary or ASCII format supported)
- View automatic format detection (Binary or ASCII STL)
- See 3D model statistics: triangles, vertices, and edges
- Analyze file size and model complexity information
- Use the data to optimize for 3D printing or CAD import
Why Use Our STL Viewer?
🔷 Binary & ASCII Support
Automatically detect and parse both binary and ASCII STL formats
📊 Model Statistics
View triangles, vertices, edges, and file size information
🖨️ 3D Print Ready
Perfect for checking models before sending to slicing software
💻 No Software Needed
View STL files without installing CAD or 3D modeling software
🔒 Complete Privacy
Files processed locally in browser - never uploaded to servers
⚡ Instant Analysis
Get model information in seconds without waiting
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 3D object surfaces using triangular facets.
What's the difference between binary and ASCII STL?
Binary STL files are compact and efficient (recommended for 3D printing), while ASCII STL files are human-readable text. Binary files are typically 5-10x smaller than ASCII versions.
Can I view STL files without 3D software?
Yes! Our STL Viewer analyzes STL files directly in your browser without needing Blender, Meshmixer, or other 3D modeling software.
Are my STL files uploaded to your servers?
No, all processing happens locally in your browser. Your 3D model files are never uploaded, ensuring complete privacy and security.
Why are triangle counts important for 3D printing?
Triangle count affects file size, slicing time, and print quality. Higher counts mean more detail but larger files and longer processing times.
Can I use this for architectural models?
Yes! STL files are commonly used for architectural models, product design, and engineering prototypes before 3D printing or fabrication.